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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Caspian Gull cachinnans K.S 1CY-3CY, May 2021 - March 2023, De Kreupel & Vlissingen, the Netherlands. Picture: Fred Visscher, Leon Kelder & Sander Lilipaly.

Red tibia ring r[K.S] and metal NLA 5.556.724, ringed as pullus Larus cachinnans on May 14 2021 at nest D05 in colony De Kreupel, the Netherlands. Ringer: Leon Kelder.
ID uncertain, both parents are unknown.

Recoveries:
27-3-2023 Onderdijk (Vooroever), Noord-Holland, NL 5.244,00 N 508,00 E colourring read Leon Kelder
20-4-2023 Twisk (Oostermare), Noord-Holland, NL 5.245,00 N 503,00 E colourring read Fred Visscher

below: Caspian Gull cachinnans K.S 3CY, April 20 2023, Twisk, the Netherlands. Picture: Fred Visscher.

below: Caspian Gull cachinnans K.S 2CY, January 08 2022, Vlissingen, the Netherlands. Picture: Sander Lilipaly.

below: Caspian Gull cachinnans K.S 1CY, May 14 2021, De Kreupel - D, the Netherlands. Picture: Leon Kelder.

Date: details:            
           
23-4-2021 3 eggs in nest. egg no: width (mm): length (mm): volume (cm3): 
  A egg 50.0 72.2
B egg 50.9 68.9
C egg 50.4 69.4
           
Attempt to trap adult at nest. Failed.            
   
14-5-2021 3 chicks in nest. metal: tibia: mass (gr): head + bill: tarsus:
  https://waarneming.nl/observation/214662787/ 5556722 Red K.P 114 56.7 31.6
    5556723 Red K.R 166 61.1 36.1
    5556724 Red K.S 152 61.0 36.5
20-5-2021 Empty nest.