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|T 1CY-5CY, 2020-2024, Lelystad, the Netherlands. Picture: Merijn Loeve, Mars Muusse & Thijs Horst.

Black bar tibia ring n[F|T] and metal NLA 5.552.905, ringed as pullus Larus cachinnans on May 21 2020 at nest 003 in colony Lelystad, the Netherlands (5230.00 N 525.00 E) - ringer Roland-Jan Buijs.
ID certain, both parents are Caspian Gull cachinnans.

Recoveries:
24-03-2023 Rotstergaast (Oosterschar). Friesland, NL 5.254,00 N 552,00 E colourring read Dick Kuipers
26-03-2023 Lelystad (Bataviahaven), Flevoland, NL 5.230,00 N 525,00 E colourring read Thijs Horst & Mars Muusse
05-04-2023 Lelystad (Bataviahaven), Flevoland, NL 5.230,00 N 525,00 E colourring read Thijs Horst & Mars Muusse
26-04-2023 Lelystad (Bataviahaven), Flevoland, NL 5.230,00 N 525,00 E colourring read Thijs Horst
08-03-2024 Lelystad (Bataviahaven), Flevoland, NL 5.230,00 N 525,00 E colourring read T. Horst & M. Muusse
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
25-03-2024 Lelystad (Bataviahaven), Flevoland, NL 5.230,00 N 525,00 E colourring read Thijs Horst
26-03-2024 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

Data and visits to the nest:

date: egg no: width (mm) length (mm) volume (cm3):  water test on April 27th: laying date:  
15-4-2020 A 50,3 72,3 92,10 90 - floating, 4mm above surface    
             
27-4-2020 B 50,1 71,5 90,36 90 - hafway in water   Both parents have cachinnans wing pattern.
27-4-2020 C 47,9 70,3 81,21 90 - tip at bottom  
   
sum nest: 263,68  
21-5-2020 pulli Empty nest, 3 chicks near nest, ringed n[F|R], n[F|S], n[F|T].

below: Caspian Gull cachinnans F|T 5CY, March 26 2024, Lelystad, the Netherlands. Picture: Thijs Horst & Mars Muusse.

below: Caspian Gull cachinnans F|T 5CY, March 20 2024, Lelystad, the Netherlands. Picture: Thijs Horst & Mars Muusse.

below: Caspian Gull cachinnans F|T 5CY, March 19 2024, Lelystad, the Netherlands. Picture: Thijs Horst & Mars Muusse.

below: Caspian Gull cachinnans F|T 5CY, March 08 2024, Lelystad, the Netherlands. Picture: Thijs Horst & Mars Muusse.

This year maybe breeding in Lelystad colony.

below: Caspian Gull cachinnans F|T 4CY, April 05 2023, Lelystad, the Netherlands. Picture: Thijs Horst.

This year prospecting Lelystad colony.

below: Caspian Gull cachinnans F|T 4CY, April 04 2023, Lelystad, the Netherlands. Picture: Mars Muusse & Thijs Horst.

below: Caspian Gull cachinnans F|T 4CY, March 26 2023, Lelystad, the Netherlands. Picture: Mars Muusse & Thijs Horst.

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