Larus cachinnans in the Netherlands

(last update: June 01, 2022)

Coordinators:
Albert de Jong
Leon Kelder
Roland-Jan Buijs
Merijn Loeve
Mars Muusse

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Nests at De Kreupel 2020
nest r-02P4 20
nest y-X804 20
nest D01 20
nest D02 20
nest D03 20
nest L01 20
nest L02 20
nest L03 20
nest M02 20
Nests at De Kreupel 2021
nest r-02P4 20
nest w-201U 21
nest g-XLHD 21
nest r-KA 21
nest r-KB 21
nest r-KC 21
nest r-KD 21
nest r-KE 21
nest r-KF 21
nest r-KH 21
nest r-KJ 21
nest r-KK 21
nest A01 21
nest C03 21
nest C04 21
nest C06 21
nest D01 21
nest D03 21
nest D05 21
nest D06 21
nest D07 21
nest D08 21
nest E01 21
nest H01 21
nest L01 21
nest L02 21
nest L05 21
nest L06 21
nest L07 21
nest M01 21
nest M04 21
nest M06 21
nest Q01 21
Nests at Lelystad 2020
nest y-PNED
nest y-PLDP
nest y-PESV
nest g-XLDT
nest 001
nest 003
nest 009
nest 011
nest 012
nest 013
nest 014
nest 015
nest 016
nest 017
nest 018
nest 021
nest 025
nest 027
nest 028
nest 029
nest 031
nest 032
nest 033
nest 034
nest 035
nest 036
nest 037
nest 038
nest 039
pair A
pair B
Nests at Lelystad 2021
nest y-PNED
nest y-PESV
nest y-PLDP
nest y-PHSV
nest y-P:A02
nest y-P:U60
nest r-FB
nest r-FC
nest 001
nest 003
nest 006
nest 011
nest 012
nest 013
nest 014
nest 015
nest 016B
nest 017
nest 018
nest 019
nest 021
nest 034
nest 035
nest 038
nest 040
nest 041
nest 042
nest 044
nest 046
nest 047
nest 048
nest 053
nest 054
nest 055
nest 056
nest 058
nest 060
nest 062
nest 063
nest 065
nest 066
nest 067
nest 072
Nests at De Kreupel 2022 Nests at Lelystad 2022
nest y-PNED
nest y-PHSV / r-CG
nest y-P:U60
nest y-X56A
nest y-X71A
nest y-X540
nest y-XCHP
nest w-327:U
nest n-F|N
nest r-6A
nest r-6B
nest r-6C
nest r-CS
nest r-FC
nest w-8Z
nest zy-MT
nest 003
nest 011
nest 012
nest 014
nest 015
nest 017

nest 017B
nest 018
nest 019
nest 021
nest 026
nest 034
nest 035
nest 038
nest 040
nest 044
nest 046
nest 048
nest 053

nest 055
nest 058
nest 060
nest 061Z
nest 062
nest 063
nest 107Z

nest 109
nest 111
nest 112
nest 113
nest 117Z
nest 118Z

nest 123Z
nest 124Z
nest 125Z
nest 126Z
nest 127Z
nest 128Z
nest 129Z
nest 131Z
nest 132 YLG
nest 133
nest 134
nest 135
nest 136
nest 137
nest 138
nest 139
nest 143Z
nest 203
nest 204
nest 207
nest 222Z
nest 227
nest 228Z
nest 229
nest 230Z
nest 231
nest 240Z
nest 244
nest 245Z
Caspian Gull cachinnans 02P4 (now K.G) 5CY-11CY, 2018 - 2022, De Kreupel & Medemblik, the Netherlands. Pictures: Leon Kelder, Merijn Loeve & Renate Visscher.
Parent of
"nest r02P4"
.
Caspian Gull cachinnans D|0 1CY-2CY, May 2021 & January 2022, De Kreupel, the Netherlands & Sonzay, France. Picture: Leon Kelder & Patrick Derrien.
Bird hatched at
"nest w-201:U 21" in season 2021.
Caspian Gull cachinnans F0 1CY, May 14 2021, De Kreupel nest KK 21, the Netherlands. Picture: Leon Kelder.
Bird hatched at
"nest KK 21" in season 2021.
Caspian Gull cachinnans 0.X 1CY, July 26 2022, Cromer, England. Picture: Andy Hale.
Bird hatched at De Kreupel
in season 2022.
Herring Gull argenteus-type B.0 1CY, May 28 2021, De Kreupel - C, the Netherlands. Picture: Leon Kelder.
Bird hatched at
"nest KJ 21" in season 2021.
Caspian Gull cachinnans PESV 10CY-11CY, 2020-2021, Lelystad, the Netherlands.
Parent of
"nest 006" in season 2019-2021. Originally, ringed as pullus in Poland.
Caspian Gull cachinnans D|2 1CY, May & September 2021, De Kreupel, the Netherlands & offshore Gulf of Biskay / Bask Country. Picture: Asier Aldalur & Leon Kelder.
Bird hatched at
"nest L06 21" in season 2021.
Caspian Gull cachinnans F1 1CY, May 21 2020, De Kreupel, the Netherlands.
Bird hatched at
"nest K05" in season 2020.

Caspian Gull cachinnans 1.B 1CY, August 15 2022, Manchester, England. Picture: Rob Creek.
Bird hatched at De Kreupel
in season 2022.
Caspian Gull cachinnans B.2 2CY, April 01 2022, Bañugues - Asturias, Spain. Picture: José Antonio Cañizares.
Bird hatched at
"nest w-201:U 21" in season 2021.
Caspian Gull cachinnans PHSV (now C.G) 11CY-12CY, 2021-2022, Lelystad, the Netherlands.
Parent of
"nest PHSV" in season 2021-2022. Originally, ringed as pullus in Poland.
Caspian Gull cachinnans D|3 1CY, July 23 2021, Cley (Marshes), Norfolk, UK. Picture: Ashley Saunders.
Bird hatched at
"nest L06 21" in season 2021.
Caspian Gull cachinnans F2 1CY, May 21 2020, De Kreupel, the Netherlands.
Bird hatched at
"nest K03" in season 2020.
Caspian Gull cachinnans 1.M 1CY, July 27 2022, Cotesbach, England. Picture: Dale Green.
Bird hatched at De Kreupel
in season 2022.
Caspian Gull cachinnans B.3 1CY, May - November 2021, the Netherlands, Dorset, UK & Asturias, Spain. Picture: Gilberto Sánchez Jardón, Martin Casemore & Leon Kelder.
Bird hatched at
"nest H01 21" in season 2021.
Caspian Gull cachinnans PLDP 9CY, May 07 2020, Lelystad, the Netherlands.
Parent of
"nest 005" in season 2019 and 2020. Originally, ringed as pullus in Poland.
Caspian Gull cachinnans D|4 1CY, May 20 2021, De Kreupel - L, the Netherlands. Picture: Leon Kelder.
Bird hatched at
"nest L06 21" in season 2021.
Caspian Gull cachinnans F3 1CY, June 12 2020, De Kreupel, the Netherlands.
Bird hatched at
"nest K03" in season 2020.
Caspian Gull cachinnans 1.S 1CY, August 22 2022, Sheffield, England. Picture: Andy Deighton.
Bird hatched at De Kreupel
in season 2022.
Caspian Gull cachinnans B.4 1CY, May 28 2021, De Kreupel - H, the Netherlands. Picture: Leon Kelder.
Bird hatched at
"nest H01 21" in season 2021.
Caspian Gull cachinnans PNED 8CY-9CY, 2020-2021, Lelystad, the Netherlands. Picture: Mars Muusse.
Parent of
"nest 002" in season 2019-2021. Originally, ringed as pullus in Poland.
Caspian Gull cachinnans D|9 1CY, May 20-30 2021, De Kreupel - L, the Netherlands. Picture: Leon Kelder.
Bird hatched at
"nest KD 21" in season 2021.
Caspian Gull cachinnans F4 1CY-3CY, May - June 2020, February 2021 & August 2022, De Kreupel & Almere, the Netherlands. Picture: Eric Roeland, Leon Kelder & Thijs Horst.
Bird hatched at
"nest K03" in season 2020.
Caspian Gull cachinnans 2.F 1CY, August 23 2022, L'Eree - Guernsey, England. Picture: Wayne Turner.
Bird hatched at De Kreupel
in season 2022.
Caspian Gull cachinnans B.5 1CY, May - June 2021, De Kreupel - H, the Netherlands. Picture: Leon Kelder.
Bird hatched at
"nest H01 21" in season 2021.
Caspian Gull cachinnans P:A02 5CY, March - June 2021, Lelystad, the Netherlands. Picture: Mars Muusse & Albert de Jong.
Parent of
"nest 057" in season 2021. Originally, ringed as pullus in Poland.
Caspian Gull cachinnans D|+ 1CY, May & October 2021, De Kreupel & Schellinkhout, the Netherlands. Picture: Leon Kelder.
Bird hatched at
"nest KA 21" in season 2021.
Caspian Gull cachinnans F5 1CY-2CY, May 2020 & May 2021, De Kreupel & Almere, the Netherlands. Picture: Leon Kelder & Eric Roeland.
Bird hatched at
"nest K02" in season 2020.
Caspian Gull cachinnans 2.W 1CY, July 24 2022, Wieringerwerf, the Netherlands. Picture: Robert Schouw.
Bird hatched at De Kreupel
in season 2022.
Caspian Gull cachinnans B.6 1CY, May 30 2021, De Kreupel - L, the Netherlands. Picture: Leon Kelder.
Bird hatched at
"nest KD 21" in season 2021.
Caspian Gull cachinnans P:U60 4CY, March - June 2021, Lelystad, the Netherlands. Picture: Mars Muusse & Albert de Jong.
Parent of
"nest 068" in season 2021. Originally, ringed as pullus in Poland.
Caspian Gull cachinnans D|A 1CY-2CY, May 2021 - April 2022, De Kreupel - Almere, the Netherlands. Picture: Eric Roeland, Leon Kelder, Merijn Loeve & Thijs Horst.
Bird hatched at
"nest M01 21" in season 2021.
Caspian Gull cachinnans F7 1CY & 3CY, May - June 2020 & May 2022, De Kreupel & Medemblik, the Netherlands. Picture: Leon Kelder.
Bird hatched at
"nest K04" in season 2020.
Caspian Gull cachinnans 3.A 1CY, July 28 2022, Cromer, England. Picture: Andy Hale.
Bird hatched at De Kreupel
in season 2022.
Caspian Gull cachinnans B.7 1CY, June 11 2021, De Kreupel nest A01 21, the Netherlands. Picture: Leon Kelder.
Bird hatched at
"nest A01 21" in season 2021.
Caspian Gull cachinnans XLDT adult, May 07 2020, Lelystad, the Netherlands.
Parent of
"nest 008" in season 2019 and 2020. Originally, ringed as pullus in Germany.
Caspian Gull cachinnans D|B 1CY, May - June 2021, De Kreupel - M, the Netherlands. Picture: Leon Kelder.
Bird hatched at
"nest M04 21" in season 2021.
Caspian Gull cachinnans F8 1CY & 3CY, May - June 2020 & May 2022, De Kreupel, the Netherlands. Picture: Leon Kelder.
Bird hatched at
"nest K04" in season 2020.
Caspian Gull cachinnans (hybrid?) 3.R 1CY, August 16 2022, Onderdijk, the Netherlands. Picture: Theo Ruppert.
Bird hatched at De Kreupel
in season 2022.
Caspian Gull cachinnans B.8 1CY, June 11 2021, De Kreupel nest A01 21, the Netherlands. Picture: Leon Kelder.
Bird hatched at
"nest A01 21" in season 2021.
Caspian Gull cachinnans XLHD 5CY-6CY, April-June 2020 & 2021, De Kreupel - B, the Netherlands. Picture: Leon Kelder.
As 4CY, it visited the native colony in Germany in the breeding season, however, as 5CY it started breeding in Holland. Parent of
"nest XLHD 21".
Caspian Gull cachinnans D|C 1CY, May - June 2021, De Kreupel - M, the Netherlands. Picture: Leon Kelder.
Bird hatched at
"nest M04 21" in season 2021.
Caspian Gull cachinnans F9 1CY-3CY, May 2020 - January 2022, the Netherlands & France. Picture: Leon Kelder, Eric Roeland & Sophie Damian-Picollet.
Bird hatched at
"nest K07" in season 2020.
Herring Gull argenteus 3.Y 1CY, August 19 2022, Southwold, England. Picture: Brian Small.
Bird hatched at De Kreupel
in season 2022.
Caspian Gull cachinnans B.A 1CY, June 11 2021, De Kreupel - L, the Netherlands. Picture: Leon Kelder.
Bird hatched at
"nest L07 21" in season 2021.
Caspian Gull cachinnans X56A 5CY, April - June 2022, Lelystad, the Netherlands. Picture: Thijs Horst & Mars Muusse.
From east Germany, breeding in 2022 at Lelystad at "nest 206".
Caspian Gull cachinnans D|E 1CY, June 17 2021, De Kreupel nest KG 21, the Netherlands. Picture: Leon Kelder.
Bird hatched at
"nest r-02P4 / KG 21" in season 2021.
Caspian Gull cachinnans F+ 1CY-2CY, May - June 2020 & October 2021, De Kreupel & Texel, the Netherlands. Picture: Willem Wind & Leon Kelder.
Bird hatched at
"nest K06" in season 2020.
Caspian Gull cachinnans 4.B 1CY, August 23 2022, Kilnsea, England. Picture: Peter Knight.
Bird hatched at De Kreupel
in season 2022.
Caspian Gull cachinnans B.B 1CY, June & November 2021, De Kreupel & Spakenburg, the Netherlands. Picture: Leon Kelder & Hans van Muiswinkel.
Bird hatched at
"nest L07 21" in season 2021.
Caspian Gull cachinnans X60J 4CY, April - July 2022, Lelystad, the Netherlands. Picture: Thijs Horst & Mars Muusse.
From east Germany, prospecting in 2022 at Lelystad.
Caspian Gull cachinnans D|G 1CY, June & August 2021, De Kreupel, the Netherlands & St. Mary's Island, UK. Picture: John Malloy & Leon Kelder.
Bird hatched at
"nest r-02P4 / KG 21" in season 2021.
Caspian Gull cachinnans F= 1CY, May 21 2020, De Kreupel, the Netherlands.
Bird hatched at
"nest K05" in season 2020.
Caspian Gull cachinnans 4.R 1CY, August 06 2022, Trintelzand, the Netherlands. Picture: Mars Muusse.
Bird hatched at De Kreupel
in season 2022. Road kill.
Caspian Gull cachinnans B.C 1CY, June - August 28 2021, De Kreupel - Q, the Netherlands. Picture: Leon Kelder.
Bird hatched at
"nest Q01 21" in season 2021.
Caspian Gull cachinnans X540 5CY, April - June 2022, Lelystad, the Netherlands. Picture: Mars Muusse.
From east Germany, breeding in 2022 at Lelystad at "nest 223".
Caspian Gull cachinnans D|N 1CY, May - June 2021, De Kreupel - C, the Netherlands. Picture: Leon Kelder.
Bird hatched at
"nest C03 21" in season 2021.
Caspian Gull cachinnans FA 1CY, June 12 2020, De Kreupel, the Netherlands.
Bird hatched at
"nest K08" in season 2020.
  Herring Gull argenteus B.N 1CY-2CY, November 2021 - February 2022, Almere & Bunschoten-Spakenburg, the Netherlands. Picture: Thijs Horst, Mars Muusse & Hans van Muiswinkel.
Bird hatched at colony De Kreupel, in season 2021.
Caspian Gull cachinnans X804 adult, immigrant from east Germany, breeding in 2020 at De Kreupel colony, labelled "nest K06". Originally, ringed as pullus in Germany. Caspian Gull cachinnans D|P 1CY, May - June 2021, De Kreupel - C, the Netherlands. Picture: Leon Kelder.
Bird hatched at
"nest C03 21" in season 2021.
Caspian Gull cachinnans FB 1CY, June 2020 & April 2022, De Kreupel & Almere, the Netherlands. Picture: Leon Kelder & Eric Roeland.
Bird hatched at
"nest K08" in season 2020.
  Herring Gull argenteus B.P 1CY, July 30 2021, De Kreupel, the Netherlands. Picture: Leon Kelder.
Bird hatched at colony De Kreupel, in season 2021.
Caspian Gull cachinnans hybrid XCHP 5CY, April - July 2022, Lelystad, the Netherlands. Picture: Thijs Horst & Mars Muusse.
From east Germany, breeding in 2022 at Lelystad at "nest XCHP".
Caspian Gull cachinnans D|S 1CY, May - June 2021, De Kreupel - D, the Netherlands. Picture: Leon Kelder.
Bird hatched at
"nest D08 21" in season 2021.
Caspian Gull cachinnans FD 1CY, June 12 2020, De Kreupel, the Netherlands.
Bird hatched at
"nest K09" in season 2020.
  Caspian Gull cachinnans B.R 2CY, March 16 2022, Dieppe, France. Picture: Julien Yvon.
Bird hatched at colony De Kreupel, in season 2021.
Caspian Gull cachinnans 201:U 6CY, May 20 2021, De Kreupel - D, the Netherlands. Picture: camera trap.
Parent of
"nest 201U 21" in season 2021. Originally, ringed as pullus in Czechia
.
Caspian Gull cachinnans D|T 1CY, May 20 2021, De Kreupel - D, the Netherlands. Picture: Leon Kelder.
Bird hatched at
"nest D08 21" in season 2021.
Caspian Gull cachinnans FE 1CY, June 12 2020, De Kreupel, the Netherlands.
Bird hatched at
"nest K09" in season 2020.
  Caspian Gull cachinnans B.= adult, July 17 2022, Lelystad, the Netherlands. Pictures: Thijs Horst & Mars Muusse.
Bird breeding at De Kreupel in season 2022.
Caspian Gull cachinnans 327:U 4CY-5CY female, March 2021 - July 2022, Lelystad, the Netherlands. Picture: Albert de Jong, Mars Muusse & Thijs Horst.
Ringed as pullus in Czechia. Present in 2021 & 2022 (with partner r-KY27 from Belarus), but no breeding.
Caspian Gull cachinnans D|U 1CY, May - June 2021, De Kreupel - D, the Netherlands. Picture: Leon Kelder.
Bird hatched at
"nest D08 21" in season 2021.
Caspian Gull cachinnans FF 1CY, June 12 2020, De Kreupel, the Netherlands.
Bird (maybe?) hatched at
"nest K09" in season 2020.
  Caspian Gull cachinnans C.A 1CY, May 09 2022, Lelystad, the Netherlands. Picture: Mars Muusse & Thijs Horst.
Bird hatched at
"nest 60" in season 2022.
Caspian Gull cachinnans KY27 adult male, May 2021 & April 2022, Minsk, Belarus & Lelystad, the Netherlands. Picture: Irina Samusenko & Mars Muusse.
Ringed as breeding adult male in season 2021 in Belarus.
In 2022 with partner w-327:U from Czechia.
Caspian Gull cachinnans D|V 1CY, May - June 2021, De Kreupel - E, the Netherlands. Picture: Leon Kelder.
Bird hatched at
"nest E01 21" in season 2021.

Herring Gull argentatus hybrid FG 1CY-2CY, May 2021 & February 2022, De Kreupel & Bunschoten, the Netherlands. Picture: Leon Kelder & Merijn Loeve.
Bird hatched at
"nest XLHD 21" in season 2021.

Caspian Gull cachinnans hybrid 5.0 1CY, May - June 2022, Lelystad, the Netherlands. Picture: Thijs Horst & Mars Muusse.
Bird hatched at
"nest 221 / y[XCHP]" in season 2022.
Caspian Gull cachinnans C.B 1CY, May - June 2022, Lelystad, the Netherlands. Picture: Mars Muusse & Thijs Horst.
Bird hatched at
"nest 60" in season 2022.
Caspian Gull cachinnans NLA 5.517.117 3CY & 5CY, July 2020 & April 2022, De Kreupel - C, the Netherlands. Picture: Leon Kelder & Merijn Loeve.
This is the first record of a Dutch bird back in the native colony, in fact, returning to the exact island where it was ringed as pullus.
Caspian Gull cachinnans F|0 1CY, May 28 2021, Lelystad, the Netherlands. Picture: Albert de Jong & Mars Muusse.
Bird hatched at
"nest 60" in season 2021.
Caspian Gull cachinnans FH 1CY, June 12 2020, De Kreupel, the Netherlands.
Bird hatched at
"nest K09" in season 2020.
Caspian Gull cachinnans hybrid 5.1 1CY, May - August 2022, Lelystad & Almere, the Netherlands. Picture: Thijs Horst & Mars Muusse.
Bird hatched at
"nest 221 / y[XCHP]" in season 2022.
Caspian Gull cachinnans C.C 1CY, May - July 2022, Lelystad, the Netherlands. Picture: Mars Muusse & Thijs Horst.
Bird hatched at
"nest 60" in season 2022.
Herring Gull argenteus NLA 5.556.763 1CY, May 20 2021, De Kreupel - M, the Netherlands. Picture: Leon Kelder.
Bird hatched at
"nest KC 21" in season 2021.
Hybrid Herring Gull argenteus x Caspian Gull cachinnans F|1 1CY, May & October 2021, Lelystad, & Barneveld dump, the Netherlands. Picture: Timon van den Heuvel, Albert de Jong & Mars Muusse.
Bird hatched at
"nest 60" in season 2021.
Herring Gull argentatus hybrid FJ 1CY, May 14 2021, De Kreupel, the Netherlands. Picture: Leon Kelder.
Bird hatched at
"nest XLHD 21" in season 2021.
Caspian Gull cachinnans 5.2 1CY, May - July 2022, Lelystad, the Netherlands. Picture: Thijs Horst & Mars Muusse.
Bird hatched at
"nest 14" in season 2022.
Caspian Gull cachinnans C.D 1CY, May - June 2022, Lelystad, the Netherlands. Picture: Mars Muusse & Thijs Horst.
Bird hatched at
"nest PNED" in season 2022.
Caspian Gull cachinnans F|0 1CY-2CY, May 2020 & August 2021, Lelystad & Schellinkhout, the Netherlands. Picture: Merijn Loeve & Leon Kelder.
Bird hatched at
"nest 09" in season 2020.
Herring Gull argenteus F|2 1CY, May 28 2021, Lelystad, the Netherlands. Picture: Albert de Jong.
Bird hatched at dam 1 south section near
"nest 60-62-63" in season 2021.
Lesser Black-backed Gull graellsii FK 3CY, August 16-23 2022, Almere, the Netherlands. Picture: Thijs Horst & Mars Muusse.
Bird hatched at De Kreupel in season 2021.
Caspian Gull cachinnans 5.3 1CY, May - June 2022, Lelystad, the Netherlands. Picture: Thijs Horst & Mars Muusse.
Bird hatched at
"nest 206 / y[X56A]" in season 2022.
Caspian Gull cachinnans C.F 1CY, May - June 2022, Lelystad, the Netherlands. Picture: Mars Muusse & Thijs Horst.
Bird hatched at
"nest 112" in season 2022.
Caspian Gull cachinnans F|1 1CY, May 21 2020, Lelystad, The Netherlands. Picture: Merijn Loeve.
Bird hatched at
"nest 06 yPESV" in season 2020, one of the parents being Caspian Gull Larus cachinnans PESV 10CY originally from Poland.
Herring Gull argenteus F|4 1CY-2CY, May 2021 - March 2022, Almere & Lelystad, the Netherlands. Picture Eric Roeland, Thijs Horst & Albert de Jong.
Bird hatched at dam 1 south section near
"nest 60-62-63" in season 2021.
Caspian Gull cachinnans FL 1CY, May 14 2021, De Kreupel - C, the Netherlands. Picture: Leon Kelder.
Bird hatched at
"nest C04 21" in season 2021.
Caspian Gull cachinnans 5.4 1CY, May - June 2022, Lelystad, the Netherlands. Picture: Thijs Horst & Mars Muusse.
Bird hatched at
"nest 206 / y[X56A]" in season 2022.
Caspian Gull cachinnans C.H 1CY, May - July 2022, Lelystad, the Netherlands. Picture: Mars Muusse & Thijs Horst.
Bird hatched at
"nest 111" in season 2022.
Caspian Gull cachinnans F|2 1CY, May 21 2020, Lelystad, The Netherlands. Picture: Merijn Loeve.
Bird hatched at
"nest 21" in season 2020.
Caspian Gull cachinnans F|5 1CY, May 28 2021, Lelystad, the Netherlands. Picture: Albert de Jong.
Bird hatched at nest PLDP
in season 2021.
Caspian Gull cachinnans FM 1CY, May 14 2021, De Kreupel - C, the Netherlands. Picture: Leon Kelder.
Bird hatched at
"nest C04 21" in season 2021.
Caspian Gull cachinnans 5.5 1CY, May - June 2022, Lelystad, the Netherlands. Picture: Thijs Horst & Mars Muusse.
Bird hatched at
"nest 206 / y[X56A]" in season 2022.
Caspian Gull cachinnans C.J 1CY, May - July 2022, Lelystad, the Netherlands. Picture: Mars Muusse & Thijs Horst.
Bird hatched at
"nest 111" in season 2022.
Caspian Gull cachinnans F|4 1CY, May & September-December 2020, the Netherlands & England. Picture: Merijn Loeve & Andy Hale.
Bird hatched at
"nest 21" in season 2020.
Hybrid Herring Gull argenteus x Caspian Gull cachinnans F|6 1CY, May 28 2021, Lelystad, the Netherlands. Picture: Albert de Jong, Roland-Jan Buijs & Mars Muusse.
Bird hatched at "nest 40
" in season 2021. Father is Caspian Gull and mother is Herring Gull.
Caspian Gull cachinnans FN 1CY, May 14 2021, De Kreupel nest KK 21, the Netherlands. Picture: Leon Kelder.
Bird hatched at
"nest KK 21" in season 2021.
Caspian Gull cachinnans 5.6 1CY, May - July 2022, Lelystad, the Netherlands. Picture: Thijs Horst & Mars Muusse.
Bird hatched at
"nest 203" in season 2022.
Caspian Gull cachinnans C.K 1CY, May - June 2022, Lelystad, the Netherlands. Picture: Mars Muusse & Thijs Horst.
Bird hatched at
"nest 207" in season 2022.
Caspian Gull cachinnans F|5 1CY, May & September 2020, the Netherlands & Portugal. Picture: Merijn Loeve, Rui Viana & Helder Cardoso.
Bird hatched at
"nest 33" in season 2020.
Hybrid Herring Gull argenteus x Caspian Gull cachinnans F|7 1CY, May 28 2021, Lelystad, the Netherlands. Picture: Albert de Jong, Roland-Jan Buijs & Mars Muusse.
Bird hatched at "nest 40
" in season 2021. Father is Caspian Gull and mother is Herring Gull.
Caspian Gull cachinnans hybrid FP 1CY-2CY, May 2021 & February 2022, De Kreupel & Medemblik, the Netherlands. Picture: Leon Kelder & Mars Muusse.
Bird hatched at
"nest KK 21" in season 2021.
Caspian Gull cachinnans 5.7 1CY, May - July 2022, Lelystad, the Netherlands. Picture: Thijs Horst & Mars Muusse.
Bird hatched at
"nest 203" in season 2022.
Caspian Gull cachinnans C.L 1CY, May - June 2022, Lelystad, the Netherlands. Picture: Mars Muusse & Thijs Horst.
Bird hatched at
"nest 12" in season 2022.
Caspian Gull cachinnans F|6 1CY-3CY, May 2020 - April 2022, Lelystad-Almere, the Netherlands. Picture: Merijn Loeve, Mars Muusse & Eric Roeland.
Bird hatched at
"nest 33" in season 2020.
Hybrid Caspian Gull cachinnans x Herring Gull argenteus F|8 1CY, May & October 2021, Lelystad-Almere, the Netherlands. Picture: Eric Roeland, Albert de Jong & Thijs Horst.
Bird hatched at "nest 34
" in season 2021. Father is Caspian Gull and mother is Herring Gull.
Caspian Gull cachinnans FR 1CY-2CY, May 2021 - April 2022, De Kreupel & Almere, the Netherlands. Picture: Leon Kelder & Mars Muusse.
Bird hatched at
"nest C06 21" in season 2021.
Caspian Gull cachinnans 5.8 1CY, May - July 2022, Lelystad, the Netherlands. Picture: Thijs Horst & Mars Muusse.
Bird hatched at
"nest 104 r[F.C]" in season 2022.
Caspian Gull cachinnans C.M 1CY, May - June 2022, Lelystad, the Netherlands. Picture: Mars Muusse & Thijs Horst.
Bird hatched at
"nest 12" in season 2022.
Caspian Gull cachinnans F|7 1CY, May, August & October 2020, Lelystad & Dordtse Biesbosch, the Netherlands. Picture: Merijn Loeve, Eric Roeland & Jos Koopman.
Bird hatched at
"nest 06" in season 2020, one of the parents is Caspian Gull Larus cachinnans PESV 10CY originally from Poland.
Hybrid Caspian Gull cachinnans x Herring Gull argenteus F|9 1CY-2CY, May 2021 - June 2022, Lelystad, the Netherlands. Picture: Eric Roeland, Mars Muusse & Albert de Jong.
Bird hatched at "nest 34
" in season 2021. Father is Caspian Gull and mother is Herring Gull.
Caspian Gull cachinnans FS 1CY, May -June 2021, De Kreupel - C, the Netherlands. Picture: Leon Kelder.
Bird hatched at
"nest C06 21" in season 2021.
Caspian Gull cachinnans 5.9 1CY, May 2022, Lelystad, the Netherlands. Picture: Thijs Horst & Mars Muusse.
Bird hatched at
"nest 104 r[F.C]" in season 2022.
Caspian Gull cachinnans C.N 1CY, May - June 2022, Lelystad, the Netherlands. Picture: Mars Muusse & Thijs Horst.
Bird hatched at
"nest 12" in season 2022.
Caspian Gull cachinnans F|8 1CY-2CY, May 2020, February & October 2021, Lelystad & Almere, the Netherlands. Picture: Merijn Loeve & Eric Roeland.
Bird hatched at
"nest 11" in season 2020.
Hybrid Caspian Gull cachinnans x Herring Gull argenteus F|+ 1CY-2CY, May 2021 - January 2022, Almere-Lelystad, the Netherlands.
Bird hatched at "nest 34
" in season 2021. Father is Caspian Gull and mother is Herring Gull.
Caspian Gull cachinnans FT 1CY-2CY, May 2021 - April 2022, De Kreupel & Almere, the Netherlands & Gijón, Spain. Picture: César Fernández González, Eric Roeland, Thijs Horst & Leon Kelder.
Bird hatched at "nest C06 21" in season 2021.
Herring Gull argenteus 5.+ 1CY, May 2022, Lelystad, the Netherlands. Picture: Thijs Horst & Mars Muusse.
Bird hatched at
"nest 117Z" in season 2022.
Caspian Gull cachinnans C.P 1CY, May - June 2022, Lelystad, the Netherlands. Picture: Mars Muusse & Thijs Horst.
Bird hatched at
"nest 227" in season 2022.
Caspian Gull cachinnans F|9 1CY-2CY, May 2020 & December 2021, Lelystad & Westkapelle, the Netherlands. Picture: Merijn Loeve & Ezra Mandemaker.
Bird hatched at
"nest 11" in season 2020.
Hybrid Caspian Gull cachinnans F|= 1CY-2CY, May 2021 - June 2022, the Netherlands & U.K. Picture: Thijs Horst, Albert de Jong, Roland-Jan Buijs, Mars Muusse & Miles Cluff.
Bird hatched at
"nest 53" in season 2021.
Caspian Gull cachinnans FU 1CY, May & December 2021, De Kreupel, the Netherlands & Peniche, Portugal. Picture: Leon Kelder & Helder Cardoso.
Bird hatched at
"nest D02 21" in season 2021.
Herring Gull argenteus 5.= 1CY, May 2022, Lelystad, the Netherlands. Picture: Thijs Horst & Mars Muusse.
Bird hatched at
"nest 117Z" in season 2022.
Caspian Gull cachinnans C.R 1CY, May - August 2022, Lelystad, the Netherlands & Southwold, England. Picture: Brian Small & Mars Muusse.
Bird hatched at
"nest 227" in season 2022.
Caspian Gull cachinnans F|= 1CY-3CY, May 2020 - April 2022, Lelystad & Almere, the Netherlands. Picture: Merijn Loeve, Rene Oosterhuis, Mars Muusse & Eric Roeland.
Bird hatched at
"nest 14" in season 2020.
Caspian Gull cachinnans F|A 1CY, May 21 2020, Lelystad, The Netherlands. Picture: Merijn Loeve.
Bird hatched at
"nest 25" in season 2020.
Caspian Gull cachinnans FV 1CY, May & November 2021, the Netherlands & Spain. Picture: Leon Kelder, Salva Garcia, & Stef Strik.
Bird hatched at
"nest D02 21" in season 2021.
Herring Gull argenteus 5.B 1CY, May 17-30 2022, Lelystad, the Netherlands. Picture: Mars Muusse.
Bird hatched at
"nest 63" in season 2022.
Caspian Gull cachinnans C.S 4CY, May 09 2022, Lelystad, the Netherlands. Picture: Mars Muusse.
Bird breeding at
"nest r[C.S] / 108" in season 2022.
Caspian Gull cachinnans F|+ 1CY-2CY, May 2020 - July 2021, Lelystad & Almere, the Netherlands. Picture: Juriaan Rung, Merijn Loeve & Eric Roeland.
Bird hatched at
"nest 14" in season 2020.
Caspian Gull cachinnans F|B 1CY, May 21 2020, Lelystad, The Netherlands. Picture: Merijn Loeve.
Bird hatched at
"nest 25" in season 2020.
Caspian Gull cachinnans FW 1CY, May 14 2021, De Kreupel - D, the Netherlands. Picture: Leon Kelder.
Bird hatched at
"nest D02 21" in season 2021.
Herring Gull argenteus 5.E 1CY, May 30 2022, Lelystad, the Netherlands. Picture: Mars Muusse.
Bird hatched at
"nest 63" in season 2022. Dead.
Caspian Gull cachinnans C.T 1CY, May 09 2022, Lelystad, the Netherlands. Picture: Mars Muusse.
Bird hatched at
"nest 14" in season 2022.
Caspian Gull cachinnans F|B 1CY, May 16 2019. Hatched in "nest 002" in season 2019. Caspian Gull cachinnans F|C 1CY, May 21 2020, Lelystad, The Netherlands. Picture: Merijn Loeve.
Bird hatched at
"nest 17" in season 2020.
Herring Gull argenteus FZ 2CY-3CY, March & October 2021 & January 2022, Almere, the Netherlands. Picture: Eric Roeland.
Bird hatched at De Kreupel in season 2020.
Caspian Gull cachinnans 5.F 1CY, May - July 2022, Lelystad, the Netherlands. Picture: Thijs Horst & Mars Muusse.
Bird hatched at
"nest 58" in season 2022. Only chick this year.
Caspian Gull cachinnans C.U 1CY, May - June 2022, Lelystad, the Netherlands. Picture: Thijs Horst & Mars Muusse.
Bird hatched at
"nest 14" in season 2022.
Caspian Gull cachinnans F|C 1CY - 4CY, May & October 2019, February 2021 & April 2022, the Netherlands. Picture: Merijn Loeve, Fred Visscher & Leon Kelder.
Hatched in "nest 002" in season 2019, one parent is y-PNED. In 2022 breeding at De Kreupel.
Caspian Gull cachinnans F|D 1CY-2CY, May 2020 & May - July 2021, the Netherlands & July 2020, Suffolk, UK. Picture: Merijn Loeve, Brian Small, Eric Roeland, Naomi Huijg & Thijs Horst.
Bird hatched at
"nest 32" in season 2020.
  Caspian Gull cachinnans 5.G 1CY, May 17 2022, Lelystad, the Netherlands. Picture: Mars Muusse.
Bird hatched at
"nest r[C.S] / 108" in season 2022.
Caspian Gull cachinnans C.V 1CY, May - July 2022, Lelystad, the Netherlands. Picture: Thijs Horst & Mars Muusse.
Bird hatched at
"nest 17B" in season 2022.
Lesser Black-backed Gull graellsii F|D 1CY & 4CY, May 2019 & April 2022, Lelystad & Almere, the Netherlands. Picture: Merijn Loeve, Mars Muusse & Eric Roeland.
Bird hatched at "nest A2019" in season 2019.
Caspian Gull cachinnans F|E 1CY, May 21 2020, Lelystad, The Netherlands. Picture: Merijn Loeve.
Bird hatched at
"nest 31" in season 2020.
  Caspian Gull cachinnans 5.H 1CY, May 17 2022, Lelystad, the Netherlands. Picture: Mars Muusse.
Bird hatched at "nest r[C.S] / 108" in season 2022.
Caspian Gull cachinnans C.W 1CY, May - August 2022, Lelystad & Almere, the Netherlands. Picture: Thijs Horst & Mars Muusse.
Bird hatched at
"nest 17B" in season 2022.
Lesser Black-backed Gull graellsii F|E 1CY, May 16 2019, Lelystad, the Netherlands. Picture: Merijn Loeve.
Bird hatched at "nest A2019" in season 2019.
Caspian Gull cachinnans F|F 1CY, May 21 2020, Lelystad, The Netherlands. Picture: Merijn Loeve.
Bird hatched at
"nest 37" in season 2020.
  Caspian Gull cachinnans 5.J 1CY, May 17 2022, Lelystad, the Netherlands. Picture: Mars Muusse.
Bird hatched at
"nest 21" in season 2022.
Caspian Gull cachinnans C.X 1CY, May 09 2022, Lelystad, the Netherlands. Picture: Mars Muusse.
Bird hatched at
"nest 17" in season 2022.
Caspian Gull cachinnans F|G 1CY, August 01 2019, Lelystad, The Netherlands. Picture: Merijn Loeve. Bird hatched at "nest B2019" in season 2019. Caspian Gull cachinnans F|G 1CY, May - September 2020, Lelystad & Westkapelle, the Netherlands. Picture: Merijn Loeve & Tim Raats.
Bird hatched at
"nest 38" in season 2020.
  Caspian Gull cachinnans 5.K 1CY, May 17 2022, Lelystad, the Netherlands. Picture: Mars Muusse.
Bird hatched at
"nest 21" in season 2022.
Herring Gull argenteus F.0 1CY, June 28 2022, Lelystad, the Netherlands. Picture: Mars Muusse.
Bird hatched at dam 1 near nest y[PNED]
in season 2022.
Caspian Gull cachinnans F|L 2CY, April & August 2020, Lelystad, the Netherlands. Picture: Eric Roeland.
Bird hatched at
"nest 008" in season 2019
.
Caspian Gull cachinnans F|H 1CY-2CY, May 2020 & October 2021, Lelystad & Almere, the Netherlands. Picture: Merijn Loeve & Eric Roeland.
Bird hatched at
"nest 38" in season 2020.
  Caspian Gull cachinnans 5.L 1CY, May - June 2022, Lelystad, the Netherlands. Picture: Thijs Horst & Mars Muusse.
Bird hatched at
"nest 40" in season 2022.
Herring Gull argenteus F.1 1CY-2CY, June 2021 - January 2022, Almere & Lelystad, the Netherlands. Picture: Thijs Horst, Eric Roeland & Mars Muusse.
Bird hatched at colony Lelystad - dam 1, in season 2021.
Hybrid (?) Caspian Gull cachinnans F|N 2CY-4CY, July 2020 & March - April 2022, Lelystad, Almere & Trintelzand, the Netherlands. Picture: Eric Roeland, Mars Muusse & Daniel Beuker.
Bird hatched at "nest F2019" in season 2019.
Caspian Gull cachinnans F|J 1CY, May & August 2021, Lelystad & Almere, the Netherlands. Picture: Eric Roeland, Albert de Jong & Mars Muusse.
Bird hatched at
"nest 38" in season 2021.
  Caspian Gull cachinnans 5.M 1CY, May - June 2022, Lelystad, the Netherlands. Picture: Thijs Horst & Mars Muusse.
Bird hatched at
"nest 40" in season 2022.
Herring Gull argenteus F.2 1CY, June 26 2021, Lelystad, the Netherlands. Picture: Jeroen Nagtegaal & Mars Muusse.
Bird hatched at colony Lelystad - dam 1 near nest 61,
in season 2021.
Caspian Gull cachinnans "nest F2019" in season 2019. Two chicks ringed: F|N and F|P. Caspian Gull cachinnans F|K 1CY, May - June 2021, Lelystad, the Netherlands. Picture: Jeroen Nagtegaal & Mars Muusse.
Bird hatched at
"nest 38" in season 2021.
  Caspian Gull cachinnans 5.N 1CY, May - June 2022, Lelystad, the Netherlands. Picture: Thijs Horst & Mars Muusse.
Bird hatched at
"nest 110" in season 2022.
Caspian Gull cachinnans F.3 1CY, June 26 2021, Lelystad, the Netherlands. Picture: Jeroen Nagtegaal & Mars Muusse.
Bird hatched at "nest r-FC_43",
in season 2021.
Caspian Gull cachinnans F|R 1CY, May 21 2020, Lelystad, The Netherlands. Picture: Merijn Loeve.
Bird hatched at
"nest 03" in season 2020.
Caspian Gull cachinnans F|L 1CY-2CY, May 2021 - February 2022, the Netherlands & Portugal. Picture: Mónika Ballmann, Rui Ferreira & Susana Bilber, Joao Lima.
Bird hatched at
"nest 46" in season 2021.
  Caspian Gull cachinnans 5.P 1CY, May - July 2022, Lelystad, the Netherlands. Picture: Thijs Horst & Mars Muusse.
Bird hatched at
"nest 110" in season 2022.
Caspian Gull cachinnans F.4 1CY, June 26 2021, Lelystad, the Netherlands. Picture: Jeroen Nagtegaal & Mars Muusse.
Bird hatched at "nest r-FC_43",
in season 2021.
Caspian Gull cachinnans F|S 1CY-2CY, May 2020 - March 2021, Lelystad & Almere, the Netherlands. Picture: Merijn Loeve, Eric Roeland & Mars Muusse.
Bird hatched at
"nest 03" in season 2020.
Caspian Gull cachinnans F|M 1CY-2CY, May 2021 - July 2022, Lelystad & Waalwijk, the Netherlands. Picture: Albert de Jong, Thijs Horst & Niels van Pelt.
Bird hatched at
"nest 15" in season 2021.
  Caspian Gull cachinnans 5.R 1CY, May-July 2022, Lelystad, the Netherlands. Picture: Thijs Horst & Mars Muusse.
Bird hatched at
"nest y[P:U60]" in season 2022.
Caspian Gull cachinnans F.A 1CY, May & August 2021, Lelystad-Almere, the Netherlands. Picture: Albert de Jong & Eric Roeland.
Bird hatched at "nest 053",
in season 2021.
Caspian Gull cachinnans F|T 1CY, May 21 2020, Lelystad, The Netherlands. Picture: Merijn Loeve.
Bird hatched at
"nest 03" in season 2020.
Caspian Gull cachinnans F|N 1CY, May 2021 - March 2022, the Netherlands, Belgium & Spain. Picture: Albert de Jong, Roland-Jan Buijs, David Fernandez & Juan Ruiz.
Bird hatched at
"nest 15" in season 2021.
  Caspian Gull cachinnans 5.S 1CY, May-July 2022, Lelystad, the Netherlands. Picture: Thijs Horst & Mars Muusse.
Bird hatched at
"nest y[P:U60]" in season 2022.
Caspian Gull cachinnans F.B adult, May 28 2021, Lelystad, the Netherlands. Picture: Albert de Jong, Roland-Jan Buijs & Mars Muusse.
Parent of "nest r-FB_61",
in season 2021.
Caspian Gull cachinnans F|U 1CY, May 21 2020, Lelystad, The Netherlands. Picture: Merijn Loeve.
Bird hatched at
"nest 29" in season 2020.
Caspian Gull cachinnans F|P 1CY, October 23-30 2021, Almere, the Netherlands. Picture: Eric Roeland.
Bird hatched at
"nest 13" in season 2021.
  Caspian Gull cachinnans 5.T 1CY, May-July 2022, Lelystad, the Netherlands. Picture: Thijs Horst & Mars Muusse.
Bird hatched at
"nest y[P:U60]" in season 2022.
Caspian Gull cachinnans F.C adult, May 28 2021, Lelystad, the Netherlands. Picture: Albert de Jong, Roland-Jan Buijs & Mars Muusse.
Parent of "nest r-FC_43",
in season 2021.
Caspian Gull cachinnans F|V 1CY, May 21 2020, Lelystad, The Netherlands. Picture: Merijn Loeve.
Bird hatched at
"nest 35" in season 2020.
Caspian Gull cachinnans F|R 1CY, May 28 2021, Lelystad, the Netherlands. Picture: Albert de Jong & Mars Muusse.
Bird hatched at
"nest 13" in season 2021.
  Caspian Gull cachinnans 5.U 1CY, May 17 2022, Lelystad, the Netherlands. Picture: Mars Muusse.
Bird hatched at
"nest 19" in season 2022.
Caspian Gull cachinnans F.D 1CY-2CY, May 2021 & January 2022, the Netherlands & France. Picture: Albert de Jong, Merijn Loeve, Mars Muusse, Aäron Fabrice & Patrick Derrien.
Bird hatched at "nest 003"
in season 2021.
Caspian Gull cachinnans F|W 1CY, May 21 2020, Lelystad, The Netherlands. Picture: Merijn Loeve.
Bird hatched at
"nest 35" in season 2020.
Caspian Gull cachinnans F|S 1CY, May 28 2021, Lelystad, the Netherlands. Picture: Albert de Jong & Mars Muusse.
Bird hatched at
"nest 13" in season 2021.
  Caspian Gull cachinnans 5.V 1CY, May 17 2022, Lelystad, the Netherlands. Picture: Mars Muusse.
Bird hatched at
"nest 19" in season 2022.
Caspian Gull cachinnans F.E 1CY-2CY, May 2021 - August 2022, the Netherlands & UK. Picture: Merijn Loeve, Tom Whiley, Jonny Rankin & Mike Ball.
Bird hatched at "nest 003"
in season 2021.
Caspian Gull cachinnans F|X 1CY, May 21 2020, Lelystad, The Netherlands. Picture: Merijn Loeve.
Bird hatched at
"nest 02" in season 2020.
Caspian Gull cachinnans F|T 1CY, May 28 2021, Lelystad, the Netherlands. Picture: Albert de Jong & Mars Muusse.
Bird hatched at
"nest 44" in season 2021.
  Caspian Gull cachinnans 5.W 1CY, May - June 2022, Lelystad, the Netherlands. Picture: Thijs Horst & Mars Muusse.
Bird hatched at
"nest 112" in season 2022.
Caspian Gull cachinnans F.F 1CY, May 28 2021, Lelystad, the Netherlands. Picture: Albert de Jong, Merijn Loeve & Mars Muusse.
Bird hatched at "nest y-PNED"
in season 2021.
Caspian Gull cachinnans F|Y 1CY, May 21 2020, Lelystad, The Netherlands. Picture: Merijn Loeve.
Bird hatched at
"nest 01" in season 2020.
Caspian Gull cachinnans F|U 1CY, May - June 2021, Lelystad, the Netherlands. Picture: Albert de Jong & Mars Muusse.
Bird hatched at
"nest 12" in season 2021.
  CaspianGull cachinnans 5.X 1CY, May - August 2022, Lelystad & Almere, the Netherlands. Picture: Thijs Horst & Mars Muusse.
Bird hatched at
"nest 112" in season 2022.
Caspian Gull cachinnans F.G 1CY, May 28 2021, Lelystad, the Netherlands. Picture: Albert de Jong, Merijn Loeve & Mars Muusse.
Bird hatched at "nest y-PNED"
in season 2021.
Caspian Gull cachinnans F|Z 1CY, May 21 2020, Lelystad, The Netherlands. Picture: Merijn Loeve.
Bird hatched at
"nest 09" in season 2020.

Caspian Gull cachinnans F|V 1CY-2CY, May 2021 - April 2022, Lelystad, the Netherlands & the UK. Picture: Adam Rowlands, Stuart Ainsworth, Albert de Jong & Mars Muusse.
Bird hatched at
"nest 58" in season 2021.
  Caspian Gull cachinnans 5.Y 1CY, May - June 2022, Lelystad, the Netherlands. Picture: Thijs Horst & Mars Muusse.
Bird hatched at
"nest 137" in season 2022.
Gull spec. F.H 1CY, June 26 2021, Lelystad, the Netherlands. Picture: Jeroen Nagtegaal & Mars Muusse.
Bird hatched in or near
"nest 54". If from "nest 54", then mother is Yellow-legged Gull michahellis hybrid ny-MT which is HY=2013 pullus from Wijk bij Duurstede colony.
  Caspian Gull cachinnans F|W 1CY-2CY, May 2021 - January 2022, Lelystad, Almere & Enkhuizen, the Netherlands. Picture: Eric Roeland, Jeroen Nagtegaal, Albert de Jong & Mars Muusse.
Bird hatched at
"nest 58" in season 2021.
  Caspian Gull cachinnans 5.Z 1CY, May 17 2022, Lelystad, the Netherlands. Picture: Mars Muusse.
Bird hatched at
"nest 137" in season 2022.
Herring Gull argenteus F.J 1CY, June - November 2021, Almere, Lelystad & Barneveld, the Netherlands. Picture: Eric Roeland, Timon van den Heuvel, Jeroen Nagtegaal & Mars Muusse.
Bird hatched at colony Lelystad - dam 2 near "nest 54", in season 2021.
  Caspian Gull cachinnans F|X 1CY-2CY, May 2021 - June 2022, the Netherlands & UK. Picture: Ian Bartlett, Bethany Wilson, Albert de Jong & Mars Muusse.
Bird hatched at
"nest PHSV" in season 2021.
  Caspian Gull cachinnans hybrid 6.0 1CY, May 30 2022, Lelystad, the Netherlands. Picture: Mars Muusse.
Bird hatched at
"nest 18" in season 2022.
Herring Gull argenteus F.K 1CY, June 26 2021, Lelystad, the Netherlands. Picture: Jeroen Nagtegaal & Mars Muusse.
Bird hatched at colony Lelystad - dam 2 near "nest 38", in season 2021.
  Caspian Gull cachinnans F|Y 1CY-2CY, May 2021 - August 2022, Almere & Lelystad, the Netherlands. Picture: Eric Roeland, Albert de Jong, Thijs Horst & Mars Muusse.
Bird hatched at
"nest PHSV" in season 2021.
  Caspian Gull cachinnans 6.2 1CY, May - July 2022, Lelystad, the Netherlands. Picture: Mars Muusse.
Bird hatched at
"nest 135" in season 2022.
Caspian Gull cachinnans F.L 1CY-2CY, June 2021 - May 2022, the Netherlands & Portugal. Picture: Jeroen Nagtegaal, Mars Muusse, Teresa Cohen, José Nunes & Guus van Duin.
Bird hatched at
"nest 14" in season 2021.
  Caspian Gull cachinnans F|Z 1CY, May 28 2021, Lelystad, the Netherlands. Picture: Albert de Jong & Mars Muusse.
Bird hatched at
"nest PHSV" in season 2021.
  Caspian Gull cachinnans 6.3 1CY, May 30 2022, Lelystad, the Netherlands. Picture: Mars Muusse.
Bird hatched at
"nest 135" in season 2022.
Caspian Gull cachinnans F.M 1CY, June & September-October 2021, the Netherlands & Belgium. Picture: Gunther Groenez, Jeroen Nagtegaal & Wouter Faveyts.
Bird hatched at
"nest 14" in season 2021.
  Lesser Black-backed Gull graellsii L|J 1CY, Gijón, Asturias, Spain. Picture: César Fernández González.
Bird hatched at De Kreupel, ringed in June 2021.
  Herring Gull argenteus hybrid 6.5 1CY, May - July 2022, Lelystad & Almere, the Netherlands. Picture: Mars Muusse.
Bird hatched at
"nest 244" in season 2022.
Caspian Gull cachinnans F.N 1CY, June 26 2021, Lelystad, the Netherlands. Picture: Jeroen Nagtegaal & Mars Muusse.
Bird hatched at
"nest 14" in season 2021.
  Herring Gull argenteus (hybrid?) S|0 1CY, June 26 2021, Lelystad, the Netherlands. Picture: Jeroen Nagtegaal & Mars Muusse.
Bird hatched in nest 17. Mother is Herring Gull, father maybe Caspian Gull.
  Caspian Gull cachinnans hybrid 6.7 1CY, May 30 2022, Lelystad, the Netherlands. Picture: Mars Muusse.
Bird hatched at
"nest 244" in season 2022.
Herring Gull argenteus F.P 1CY, June 26 2021, Lelystad, the Netherlands. Picture: Jeroen Nagtegaal & Mars Muusse.
Bird hatched at colony Lelystad - dam 1 south section, in season 2021. Brother/sister of r-F.R.
  Gull spec. S|2 1CY, May 28 2021, Lelystad, the Netherlands. Picture: Albert de Jong.
Bird hatched in nest 42, parents unknown.
  Caspian Gull cachinnans hybrid 6.8 1CY, May - June 2022, Lelystad, the Netherlands. Picture: Thijs Horst & Mars Muusse.
Bird hatched at
"nest 244" in season 2022.
Herring Gull argenteus F.R 1CY-2CY, June 2021 & February 2022, Lelystad & Den Helder, the Netherlands. Picture: Mardik Leopold, Jeroen Nagtegaal & Mars Muusse.
Bird hatched at colony Lelystad - dam 1 south section, in season 2021. Brother/sister of r-F.P.
  Herring Gull argenteus F2-backcross S|X 1CY, May 28 2021, Lelystad, the Netherlands. Picture: Albert de Jong.
Bird hatched at
"nest 54" in season 2021. Mother is Yellow-legged Gull michahellis hybrid ny-MT which is HY=2013 pullus from Wijk bij Duurstede colony, offspring from Herring x Yellow-legged Gull. Father is Herring Gull.
  Herring Gull argenteus 6.9 1CY, May - July 2022, Lelystad, the Netherlands. Picture: Thijs Horst & Mars Muusse.
Bird hatched at
"nest 118Z" in season 2022.
Herring Gull argenteus F.S 1CY, June 26 2021, Lelystad, the Netherlands. Picture: Jeroen Nagtegaal & Mars Muusse.
Bird hatched at colony Lelystad - dam 1 south section, in season 2021.
  Lesser Black-backed Gull graellsii S|Y 1CY, June & August 2021, Lelystad, the Netherlands & Torreira, Portugal. Picture: Roland-Jan Buijs, Jeroen Nagtegaal & Mars Muusse.
Bird Hatched at dam 2, next to nest 54.
  Herring Gull argenteus 6.A adult, May 22 2022, Lelystad, the Netherlands. Picture: Jeroen Nagtegaal & Mars Muusse.
Bird breeding at
"nest 121Z" in season 2022.
Herring Gull argenteus F.T 1CY, June 26 2021, Lelystad, the Netherlands. Picture: Jeroen Nagtegaal & Mars Muusse.
Bird hatched at colony Lelystad - dam 1 south section, in season 2021. Brother/sister of r-F.U.
  Herring Gull argenteus (hybrid?) S|Z 1CY, June 26 2021, Lelystad, the Netherlands. Picture: Jeroen Nagtegaal & Mars Muusse.
Bird hatched in nest 17. Mother is Herring Gull, father maybe Caspian Gull.
  Herring Gull argenteus 6.B adult, May - July 2022, Lelystad, the Netherlands. Picture: Thijs Horst, Jeroen Nagtegaal & Mars Muusse.
Bird breeding at
"nest 120Z" in season 2022.
Herring Gull argenteus F.U 1CY, June 26 2021, Lelystad, the Netherlands. Picture: Jeroen Nagtegaal & Mars Muusse.
Bird hatched at colony Lelystad - dam 1 south section, in season 2021. Brother/sister of r-F.T.
      Herring Gull argenteus 6.C adult, May - July 2022, Lelystad, the Netherlands. Picture: Jeroen Nagtegaal & Mars Muusse.
Bird breeding at
"nest 246Z" in season 2022.
Herring Gull argenteus F.V 1CY-2CY, June 2021 - May 2022, the Netherlands. Picture: GertJan Verbeek, Eric Roeland, Mars Muusse & Hans van Muiswinkel.
Bird hatched at colony Lelystad - dam 1 south section, in season 2021.
      Herring Gull argenteus 6.D 1CY, May 22 2022, Lelystad, the Netherlands. Picture: Jeroen Nagtegaal & Mars Muusse.
Bird hatched at
"nest 123Z" in season 2022.
Herring Gull argenteus F.W 1CY-2CY, June 2021 - August 2022, Almere & Lelystad, the Netherlands. Picture: Eric Roeland, Thijs Horst, Jeroen Nagtegaal & Mars Muusse.
Bird hatched at colony Lelystad - dam 1 south section, in season 2021.
      Herring Gull argenteus 6.E 1CY, May - July 2022, Lelystad, the Netherlands. Picture: Thijs Horst, Jeroen Nagtegaal & Mars Muusse.
Bird hatched at
"nest 123Z" in season 2022.
Herring Gull argenteus F.X 1CY-2CY, June 2021 - August 2022, Almere & Lelystad, the Netherlands. Picture: Eric Roeland, Jeroen Nagtegaal & Mars Muusse.
Bird hatched at colony Lelystad - dam 1 south section, in season 2021.
      Herring Gull argenteus 6.F 1CY, May 22 2022, Lelystad, the Netherlands. Picture: Jeroen Nagtegaal & Mars Muusse.
Bird hatched at
"nest 61Z" in season 2022.
Caspian Gull cachinnans F.Y 1CY, June 26 2021, Lelystad, the Netherlands. Picture: Jeroen Nagtegaal & Mars Muusse.
Bird hatched at "nest r-FB_61" in season 2021.
      Herring Gull argenteus 6.G 1CY, May - July 2022, Lelystad, the Netherlands. Picture: Thijs Horst & Mars Muusse.
Bird hatched at
"nest 61Z" in season 2022.
Herring Gull argenteus F.Z 1CY, June 26 2021, Lelystad, the Netherlands. Picture: Jeroen Nagtegaal & Mars Muusse.
Bird hatched at colony Lelystad - dam 1 south section, in season 2021.
      Caspian Gull cachinnans 6.H 1CY, May - July 2022, Lelystad, the Netherlands. Picture: Thijs Horst & Mars Muusse.
Bird hatched at
"nest 204" in season 2022.
Caspian Gull cachinnans K.0 1CY, May 14 2021, De Kreupel - M, the Netherlands. Picture: Leon Kelder.
Bird hatched at
"nest KA 21" in season 2021.
      Caspian Gull cachinnans 6.J 1CY, May - June 2022, Lelystad, the Netherlands. Picture: Thijs Horst & Mars Muusse.
Bird hatched at
"nest 204" in season 2022.
Caspian Gull cachinnans K.1 1CY, May 14 2021, De Kreupel - M, the Netherlands. Picture: Leon Kelder.
Bird hatched at
"nest KA 21" in season 2021.
      Caspian Gull cachinnans 6.K 1CY, May 22 2022, Lelystad, the Netherlands. Picture: Mars Muusse.
Bird hatched at
"nest 139" in season 2022.
Caspian Gull cachinnans K.2 1CY, May 14 2021, De Kreupel - M, the Netherlands. Picture: Leon Kelder.
Bird hatched at
"nest KB 21" in season 2021.
      Caspian Gull cachinnans 6.L 1CY, June - July 2022, Lelystad, the Netherlands. Picture: Thijs Horst & Mars Muusse.
Bird hatched at
"nest 139" in season 2022.
Caspian Gull cachinnans K.3 1CY, May 14 2021, De Kreupel - M, the Netherlands. Picture: Leon Kelder.
Bird hatched at
"nest KB 21" in season 2021.
      Caspian Gull cachinnans 6.M 1CY, May - July 2022, Lelystad, the Netherlands. Picture: Thijs Horst & Mars Muusse.
Bird hatched at
"nest 139" in season 2022.
Caspian Gull cachinnans K.4 1CY, May 14 2021, De Kreupel - M, the Netherlands. Picture: Leon Kelder.
Bird hatched at
"nest KB 21" in season 2021.
      Herring Gull argenteus 6.N adult, May 22 2022, Lelystad, the Netherlands. Picture: Jeroen Nagtegaal & Mars Muusse.
Bird breeding at dam 2 in
season 2022.
Herring Gull argenteus K.5 1CY, May 14 2021, De Kreupel - M, the Netherlands. Picture: Leon Kelder.
Bird hatched at
"nest M06 21" in season 2021.
      Caspian Gull cachinnans 6.P 1CY, May 22 2022, Lelystad, the Netherlands. Picture: Mars Muusse.
Bird hatched at
"nest 38" in season 2022.
Herring Gull argentatus K.6 1CY-2CY, May 2021 & February 2022, De Kreupel & Medemblik, the Netherlands. Picture: Leon Kelder & Renate Visscher.
Bird hatched at
"nest M06 21" in season 2021.
      Caspian Gull cachinnans 6.R 1CY, May 22 2022, Lelystad, the Netherlands. Picture: Mars Muusse.
Bird hatched at
"nest 38" in season 2022.
Herring Gull argenteus K.7 1CY, May 14 2021, De Kreupel - M, the Netherlands. Picture: Leon Kelder.
Bird hatched at
"nest KC 21" in season 2021.
      Caspian Gull cachinnans 6.S 1CY, May - June 2022, Lelystad, the Netherlands. Picture: Thijs Horst & Mars Muusse.
Bird hatched at
"nest 55" in season 2022.
Caspian Gull cachinnans K.8 1CY, May 14 2021, De Kreupel - M, the Netherlands. Picture: Leon Kelder.
Bird hatched at
"nest M01 21" in season 2021.
      Herring Gull argentatus hybrid 6.T 1CY, May - July 2022, Lelystad, the Netherlands. Picture: Thijs Horst & Mars Muusse.
Bird hatched at
"nest 54 / zy[M.T]" in season 2022.
Caspian Gull cachinnans K.9 1CY, May 14 2021, De Kreupel - M, the Netherlands. Picture: Leon Kelder.
Bird hatched at
"nest M01 21" in season 2021.
      Caspian Gull cachinnans 6.U 1CY, July - August 2022, Lelystad, the Netherlands & Cotesbach, England. Picture: Carl Baggott, Thijs Horst & Mars Muusse.
Bird hatched at
"nest y[X540]" in season 2022.
Caspian Gull cachinnans K.+ 1CY, May 14 2021, De Kreupel - L, the Netherlands. Picture: Leon Kelder.
Bird hatched at
"nest L01 21" in season 2021.
      Caspian Gull cachinnans 6.V 1CY, May - July 2022, Lelystad, the Netherlands. Picture: Thijs Horst & Mars Muusse.
Bird hatched at
"nest y[X540]" in season 2022.
Caspian Gull cachinnans K.= 1CY, May 14 2021, De Kreupel - L, the Netherlands. Picture: Leon Kelder.
Bird hatched at
"nest L01 21" in season 2021.
      Caspian Gull cachinnans hybrid 6.W 1CY, May 30 2022, Lelystad, the Netherlands. Picture: Mars Muusse.
Bird hatched at
"nest 48" in season 2022.
Caspian Gull cachinnans K.A adult, April & September 2021, De Kreupel & Enkhuizen, the Netherlands. Pictures: Debby Doodeman & Merijn Loeve.
Parent of
"nest KA 21" in season 2021
.
      Caspian Gull cachinnans hybrid 6.X 1CY, May - July 2022, Lelystad, the Netherlands. Picture: Mars Muusse.
Bird hatched at
"nest 48" in season 2022.
Caspian Gull cachinnans (hybrid?) K.B adult, April 23 2021, De Kreupel - M, the Netherlands. Pictures: Merijn Loeve.
Parent of
"nest KB 21" in season 2021
.
      Herring Gull argentatus hybrid 6.Y 1CY, May 30 2022, Lelystad, the Netherlands. Picture: Mars Muusse.
Bird hatched at
"nest 44" in season 2022.
Herring Gull argenteus K.C adult, April 23 2021, De Kreupel - M, the Netherlands. Pictures: Merijn Loeve.
Parent of
"nest KC 21" in season 2021
.
      Caspian Gull cachinnans hybrid 6.Z 1CY, May 30 2022, Lelystad, the Netherlands. Picture: Mars Muusse.
Bird hatched at
"nest 18" in season 2022.
Caspian Gull cachinnans K.D adult, April & November - December 2021, De Kreupel & Houten, the Netherlands. Pictures: Merijn Loeve & Herman Bouman.
Parent of
"nest KD 21" in season 2021
.
      Herring Gull argenteus 6.+ 1CY, May - June 2022, Lelystad, the Netherlands. Picture: Thijs Horst & Mars Muusse.
Bird hatched at
"nest 118Z" in season 2022.
Caspian Gull cachinnans hybrid K.E adult, April 23 2021, De Kreupel - L, the Netherlands. Pictures: Merijn Loeve.
Parent of
"nest KE 21" in season 2021
.
      Herring Gull argenteus 6.= 1CY, May - June 2022, Lelystad, the Netherlands. Picture: Mars Muusse.
Bird hatched at
"nest 121Z" in season 2022.
Caspian Gull cachinnans K.F adult, April & Otober 2021, De Kreupel & Medemblik, the Netherlands. Pictures: Merijn Loeve & Jeroen van Assema.
Parent of
"nest KF 21" in season 2021
.
      Herring Gull argenteus 7.A 1CY, May 30 2022, Lelystad, the Netherlands. Picture: Mars Muusse.
Bird hatched at
"nest 122Z" in season 2022.
Caspian Gull cachinnans K.G (was 02P4) 7CY-9CY, April 2020 & 2021, February 2022, De Kreupel & Medemblik, the Netherlands. Pictures: Leon Kelder, Merijn Loeve & Renate Visscher.
Parent of
"nest r02P4 21" in season 2021
.
      Caspian Gull cachinnans 7.B 1CY, May - July 2022, Lelystad, the Netherlands. Picture: Mars Muusse.
Bird hatched at
"nest n[F|N]" in season 2022.
Caspian Gull cachinnans K.H adult, April 23 2021, De Kreupel - C, the Netherlands. Pictures: Merijn Loeve.
Parent of
"nest KH 21" in season 2021
.
      Herring Gull argenteus 7.C 1CY, May - July 2022, Lelystad, the Netherlands. Picture: Thijs Horst & Mars Muusse.
Bird hatched at
"nest 128Z" in season 2022.
Herring Gull argenteus hybrid K.J adult, April 23 2021, De Kreupel - C, the Netherlands. Pictures: Merijn Loeve.
Parent of
"nest KJ 21" in season 2021
.
      Caspian Gull cachinnans 7.D 1CY, May - July 2022, Lelystad, the Netherlands. Picture: Thijs Horst & Mars Muusse.
Bird hatched at
"nest 110" in season 2022.
Caspian Gull cachinnans K.K adult, April 23 2021, De Kreupel - C, the Netherlands. Pictures: Merijn Loeve.
Parent of
"nest KK 21" in season 2021
.
      Caspian Gull cachinnans 7.E 1CY, May - June 2022, Lelystad, the Netherlands. Picture: Mars Muusse.
Bird hatched at
"nest 34" in season 2022.
Caspian Gull cachinnans K.L 1CY, May - September 2021, De Kreupel, the Netherlands, Kilnsea & Cromer, Norfolk, UK. Picture: Andrew Hale & Leon Kelder.
Bird hatched at
"nest D07 21" in season 2021.
      Caspian Gull cachinnans 7.F 1CY, May - July 2022, Lelystad, the Netherlands. Picture: Mars Muusse.
Bird hatched at
"nest 34" in season 2022.
Caspian Gull cachinnans K.M 1CY, May - June 2021, De Kreupel - E, the Netherlands. Picture: Leon Kelder.
Bird hatched at
"nest E01 21" in season 2021.
      Caspian Gull cachinnans hybrid 7.G 1CY, May - August 2022, Lelystad & Almere, the Netherlands. Picture: Thijs Horst & Mars Muusse.
Bird hatched at
"nest 130" in season 2022 (Caspian x Herring Gull).
Caspian Gull cachinnans K.N 1CY, May 14-20 & June 11 2021, De Kreupel - D, the Netherlands. Picture: Leon Kelder.
Bird hatched at
"nest D07 21" in season 2021.
      Yellow-legged Gull michahellis hybrid 7.K 1CY, May - July 2022, Lelystad, the Netherlands. Picture: Mars Muusse.
Bird hatched at
"nest 132" in season 2022.
Caspian Gull cachinnans K.P 1CY, May 14 2021, De Kreupel - D, the Netherlands. Picture: Leon Kelder.
Bird hatched at
"nest D05 21" in season 2021.
        Caspian Gull cachinnans K.R 1CY, May 14 2021, De Kreupel - D, the Netherlands. Picture: Leon Kelder.
Bird hatched at
"nest D05 21" in season 2021.
        Caspian Gull cachinnans K.S 1CY-2CY, May 2021 & January 2022, De Kreupel & Vlissingen, the Netherlands. Picture: Leon Kelder & Sander Lilipaly.
Bird hatched at
"nest D05 21" in season 2021.
        Caspian Gull cachinnans K.T 1CY, May - June & December 2021, De Kreupel, the Netherlands & Dungeness, UK. Picture: Leon Kelder & Martin Casemore.
Bird hatched at
"nest L02 21" in season 2021.
        Caspian Gull cachinnans K.U 1CY, May - June 2021, De Kreupel - L, the Netherlands. Picture: Leon Kelder.
Bird hatched at
"nest L02 21" in season 2021.
        Caspian Gull cachinnans K.V 1CY, May - October 2021, De Kreupel, the Netherlands, St-Aubin-sur-Mer, France & Morecambe Bay, U.K. Picture: Leon Kelder, Paul Ellis & Julien Yvon.
Bird hatched at
"nest L02 21" in season 2021.
        Caspian Gull cachinnans K.W 1CY-2CY, May 2021 & January 2022, De Kreupel, the Netherlands & Sonzay, France. Picture: Leon Kelder & Patrick Derrien.
Bird hatched at
"nest L05 21" in season 2021.
        Caspian Gull cachinnans K.X 1CY, May 14 2021, De Kreupel - L, the Netherlands. Picture: Leon Kelder.
Bird hatched at
"nest L05 21" in season 2021.
        Caspian Gull cachinnans K.Y 1CY, May 14 2021, De Kreupel - L, the Netherlands. Picture: Leon Kelder.
Bird hatched at
"nest L05 21" in season 2021.
        Caspian Gull cachinnans K.Z 1CY, May & September 2021, De Kreupel, the Netherlands & Cley Marsh, UK. Picture: Leon Kelder & Mark Golley.
Bird hatched at
"nest L01 21" in season 2021.