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 (hybrid?) 4.M 1CY, July 16 2022, Wervershoof, the Netherlands.

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

Tibia ring R-4M and metal ring NLA Arnhem 5.623.613, ringed as pullus Larus cachinnans on June 03 2022 at IJsselmeer (De Kreupel), Holland (5247.00 N 513.00 E) - ringer Leon Kelder.
Bird not allocated to a particular nest, ringed on phenotypics early June.

Recoveries:
16-07-2022 Onderdijk (Vooroever), Noord-Holland, NL 5.244,00 N 508,00 E colourring read Jeroen van Assema.

below: Caspian Gull cachinnans (hybrid?) 4.M 1CY, July 16 2022, Wervershoof, the Netherlands. Picture: Jeroen van Assema.