Larus cachinnans in the Netherlands

(last update: August 16, 2020)
Coordinator:
Albert de Jong
Merijn Loeve
Roland-Jan Buijs
Thijs Horst
Leon Kelder
Mars Muusse

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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 (hybrid) 6.L 1CY-2CY, June 2022 - April 2024, the Netherlands. Picture: Guus van Duin, Thijs Horst, Mars Muusse & Eric Roeland.

Red tibia ring r[6.L] and metal NLA 5.625.163, ringed as pullus hybrid Larus cachinnans at nest 139 on May 22 2022 in colony Lelystad, the Netherlands. Ringer: Jeroen Nagtegaal.
ID uncertain in 2022: one parent is adult cachinnans-type, other parent is adult argentatus-type.

Recoveries:
08-08-2022 IJmuiden (Haven), Noord-Holland, NL 5.228,00 N 435,00 E colourring read José Verbeek
10-09-2022 Almere (De Vaart), Flevoland, NL 5.224,00 N 514,00 E colourring read Eric Roeland
27-09-2022 Almere (Dashorstdijk), Flevoland, NL 5.225,00 N 512,00 E colourring read Guus van Duin
25-10-2022 Lelystad (Bataviahaven), Flevoland, NL 5.230,00 N 525,00 E colourring read Thijs Horst
24-11-2022 Lelystad (Bataviahaven), Flevoland, NL 5.230,00 N 525,00 E colourring read Thijs Horst
08-12-2022 Lelystad (Oostvaardersdijk), Flevoland, NL 5.228,00 N 519,00 E colourring read Jan Marbus
10-03-2023 Lelystad (Bataviahaven), Flevoland, NL 5.230,00 N 525,00 E colourring read Thijs Horst
26-03-2023 Lelystad (Bataviahaven), Flevoland, NL 5.230,00 N 525,00 E colourring read Thijs Horst
15-02-2024 Almere (De Vaart), Flevoland, NL 5.224,00 N 514,00 E colourring read Thijs Horst
19-03-2024 Lelystad (Bataviahaven), Flevoland, NL 5.230,00 N 525,00 E colourring read T. Horst & M. Muusse
20-03-2024 Lelystad (Bataviahaven), Flevoland, NL 5.230,00 N 525,00 E colourring read T. Horst & M. Muusse
26-03-2024 Lelystad (Bataviahaven), Flevoland, NL 5.230,00 N 525,00 E colourring read T. Horst & M. Muusse
31-03-2024 Lelystad (Bataviahaven), Flevoland, NL 5.230,00 N 525,00 E colourring read T. Horst & M. Muusse
08-04-2024 Lelystad (Bataviahaven), Flevoland, NL 5.230,00 N 525,00 E colourring read T. Horst & M. Muusse
11-04-2024 Lelystad (Bataviahaven), Flevoland, NL 5.230,00 N 525,00 E colourring read Joep de Leeuw
12-04-2024 Lelystad (Bataviahaven), Flevoland, NL 5.230,00 N 525,00 E colourring read M. Loeve & M. Muusse

27-Apr-22 3 eggs A egg 73,5 50,5 tip bottom - 70 gr Flag 139 attached.
B egg 72,5 52,3 tip bottom - 40 gr
C egg 70 51 tip bottom - 40 gr
29-Apr-22 2 adults.  female has thin P5 band and standing bird is HG type.
male has cachinnans wing, but bulbuous bill
01-May-22 together with LBBGs
04-May-22 partner 1 present. Images
metal darvic mass wing H+B
22-May-22 pullus .5625162 r-6K 158 33 62,8
pullus .5625163 r-6L 160 35 63,4
pullus .5625164 r-6M 98 30 55,8
21-Jun-22 pullus r-6.L on blocks at nest 135.
partner 2 is defending chick

below: Caspian Gull cachinnans (hybrid) 6.L 3CY, April 12 2024, colony Lelystad, the Netherlands. Picture: Merijn loeve & Mars Muusse.

below: Caspian Gull cachinnans (hybrid) 6.L 3CY, April 08 2024, colony Lelystad, the Netherlands. Picture: Thijs Horst & Mars Muusse.

below: Caspian Gull cachinnans (hybrid) 6.L 3CY, March 26 2024, colony Lelystad, the Netherlands. Picture: Thijs Horst & Mars Muusse.

below: Caspian Gull cachinnans (hybrid) 6.L 3CY, March 20 2024, colony Lelystad, the Netherlands. Picture: Thijs Horst & Mars Muusse.

below: Caspian Gull cachinnans (hybrid) 6.L 3CY, March 19 2024, colony Lelystad, the Netherlands. Picture: Thijs Horst.

below: Caspian Gull cachinnans (hybrid) 6.L 3CY, February 15 2024, Almere, the Netherlands. Picture: Thijs Horst.

below: Caspian Gull cachinnans (hybrid) 6.L 1CY, September 27 2022, Almere, the Netherlands. Picture: Guus van Duin.

below: Caspian Gull cachinnans (hybrid) 6.L 1CY, September 10 2022, Almere (De Vaart), the Netherlands. Picture: Eric Roeland.

below: Caspian Gull cachinnans (hybrid) 6.L 1CY, July 17 2022, Lelystad, the Netherlands. Picture: Thijs Horst & Mars Muusse.

below: Caspian Gull cachinnans (hybrid) 6.L 1CY, June 28 2022, Lelystad, the Netherlands. Picture: Thijs Horst & Mars Muusse.

r[6.M] cachinnans from nest 139. Picture: June 28th, 2022.
Fledged. Sibling r[6.L] also fledged. Sibling r[6.K] ringed on May 22nd. No observations since.

below: Caspian Gull cachinnans (hybrid) 6.L 1CY, June 21 2022, Lelystad, the Netherlands. Picture: Thijs Horst & Mars Muusse.