Larus cachinnans in the Netherlands

(last update: August 16, 2020)

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

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Lelystad 2020:
nest 001
nest 002 yPNED
nest 003
nest 005 yPLDP
nest 006 yPESV
nest 008 gXLDT
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

Caspian Gull cachinnans F|= 1CY-4CY, May 2020 - April 2023, Lelystad & Almere, the Netherlands. Picture: Merijn Loeve, Rene Oosterhuis, Thijs Horst, Mars Muusse & Eric Roeland.

Black bar tibia ring n[F|=] and metal NLA 5.552.922, ringed as pullus Larus cachinnans on May 21 2020 at nest 014 in colony Lelystad, the Netherlands (230.00 N 525.00 E), ringer: Roland-Jan Buijs.
ID certain, both parents are Caspian Gull cachinnans.

Recoveries:
02-06-2020 Lelystad (Bataviahaven), Flevoland, NL 5.230,00 N 525,00 E colourring read Mars Muusse
26-07-2020 Almere (De Blocq van Kuffeler), Flevoland, NL 5.225,00 N 513,00 E colourring read Eric Roeland
27-07-2020 Almere (De Blocq van Kuffeler), Flevoland, NL 5.225,00 N 513,00 E colourring read Rene Oosterhuis
26-01-2021 Almere (De Vaart), Flevoland, NL 5.224,00 N 514,00 E colourring read Eric Roeland
01-02-2021 Almere (De Vaart), Flevoland, NL 5.224,00 N 514,00 E colourring read Eric Roeland
25-02-2021 Almere (De Vaart), Flevoland, NL 5.224,00 N 514,00 E colourring read Eric Roeland
27-02-2021 Almere (De Vaart), Flevoland, NL 5.224,00 N 514,00 E colourring read Eric Roeland
09-03-2021 Almere (De Vaart), Flevoland, NL 5.224,00 N 514,00 E colourring read Eric Roeland
18-03-2021 Almere (De Vaart), Flevoland, NL 5.224,00 N 514,00 E colourring read Eric Roeland
19-03-2021 Almere (De Vaart), Flevoland, NL 5.224,00 N 514,00 E colourring read Eric Roeland
23-03-2021 Almere (De Vaart), Flevoland, NL 5.224,00 N 514,00 E colourring read Eric Roeland
25-03-2021 Almere (De Vaart), Flevoland, NL 5.224,00 N 514,00 E colourring read Eric Roeland
19-06-2021 Almere (Oostvaardersplassen), Flevoland, NL 5.226,00 N 517,00 E colourring read Eric Roeland
19-07-2021 Lelystad (Oostvaardersdijk), Flevoland, NL 5.228,00 N 519,00 E colourring read Eric Roeland
25-02-2022 Barneveld (Vuilstort), Gelderland, NL 5.209,00 N 537,00 E colourring read Albert de Jong & Merijn Loeve
11-04-2022 Lelystad (Bataviahaven), Flevoland, NL 5.230,00 N 525,00 E colourring read Mars Muusse
30-06-2022 Almere (De Vaart), Flevoland, NL 5.224,00 N 514,00 E colourring read Thijs Horst
12-02-2023 Almere (De Blocq van Kuffeler), Flevoland, NL 5.225,00 N 513,00 E colourring read Rene Oosterhuis
09-04-2023 Lelystad (Bataviahaven), Flevoland, NL 5.230,00 N 525,00 E colourring read Thijs Horst

Data for the nest visits of this bird:

datum: egg no: width (mm) length (mm) volume (cm3):  water test on April 27th:  
15-04-2020 A 50,5 76,9 98,74 35 - tip on bottom 3 eggs in nest.
15-04-2020 B 50,4 77,2 98,74 25 - tip on bottom  
15-04-2020 C 50,4 71,8 91,83 15 - tip on bottom  
  sum nest: 289,31
27-4-2020     Certainty about parents, cachinnans.
   
21-05-2020 pullus     Nest empty, with fish. 2 chicks ringed. n[F|=].
21-05-2020 pullus     Nest empty, with fish. 2 chicks ringed. n[F|+].
   
02-06-2020 pulli     n[F|=] together with large juvenile, so nest with 3 juveniles fledged?

below: Caspian Gull cachinnans F|= 4CY, April 09 2023, Lelystad, the Netherlands. Picture: Thijs Horst & Mars Muusse.

below: Caspian Gull cachinnans F|= 4CY, February 04 2023, Almere, the Netherlands. Picture: Eric Roeland.

below: Caspian Gull cachinnans F|= 3CY, April 11 2022, Lelystad colony, the Netherlands. Picture: Mars Muusse.

below: Caspian Gull cachinnans F|= 3CY, February 25 2022, Barneveld, the Netherlands. Picture: Merijn Loeve.

below: Caspian Gull cachinnans F|= 2CY, March 19 2021, Almere, the Netherlands. Picture: Eric Roeland.

below: Caspian Gull cachinnans F|= 2CY, March 18 2021, Almere, the Netherlands. Picture: Eric Roeland.

below: Caspian Gull cachinnans F|= 2CY, March 09 2021, Almere, the Netherlands. Picture: Eric Roeland.

below: Caspian Gull cachinnans F|= 2CY, February 01 2021, Almere, the Netherlands. Picture: Eric Roeland.

below: Caspian Gull cachinnans F|= 2CY, January 26 2021, Almere, the Netherlands. Picture: Eric Roeland.

below: Caspian Gull cachinnans F|= 1CY, July 27 2020, Lelystad, the Netherlands. Picture: Rene Oosterhuis.

Juvenile plumage.

below: Caspian Gull cachinnans F|= 1CY, July 26 2020, Lelystad, the Netherlands. Picture: Eric Roeland.

After fledging.

Caspian Gull cachinnans F|= 1CY, May 21 2020, Lelystad, the Netherlands. Picture: Merijn Loeve.