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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Caspian Gull cachinnans P|G 1CY, 2025, the Netherlands. Picture: Thijs Horst.

You can participate in this project too! Please send in your observations of colour ringed birds to: ring@buijsecoconsult.nl

Tibia G-P|G and metal NLA 5.639.037, ringed as pullus Larus cachinnans on May 09 2025 at IJsselmeer (De Kreupel), Noord-Holland, by ringer Leon Kelder.

Recoveries:
13-07-2025 IJsselmeer (De Kreupel), Noord-Holland, NL 5.247,00 N 513,00 E colourring read T. Horst, M. Muusse & N. Colpaert
11-08-2025 IJsselmeer (De Kreupel), Noord-Holland, NL 5.247,00 N 513,00 E colourring read T. Horst & M. Muusse
20-08-2025 Lelystad (Bataviahaven), Flevoland, NL 5.230,00 N 525,00 E colourring read Thijs Horst

Data for nest Q26 - 2025.

Metal ring Colour ring Date Species Age Clutch size Location Nest code Ringer Head+Bill Mass Wing Parents
NLA 5639036 g-P|F 09-5-2025 Caspian Gull pullus 2 eggs the Netherlands, De Kreupel - eiland Q. Q26 Leon Kelder 51,9 80,0
NLA 5639037 g-P|G 09-5-2025 Caspian Gull pullus 2 eggs the Netherlands, De Kreupel - eiland Q. Q26 Leon Kelder 52,6 86,0

below: Caspian Gull cachinnans P|G 1CY, August 20 2025, Oostvaardersdijk - Almere, the Netherlands. Picture: Thijs Horst.

below: Caspian Gull cachinnans P|G 1CY, July 13 2025, colony De Kreupel, the Netherlands. Picture: Thijs Horst & Mars Muusse.

Possibly, Herring Gull influences?