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| Coordinator: Albert de Jong Merijn Loeve Roland-Jan Buijs Thijs Horst Leon Kelder Mars Muusse |
Caspian Gull cachinnans P:S03 adult, July 11 2025, Marker Wadden, the Netherlands. Picture: Thijs Horst.Caspian Gull (Larus cachinnans) with yellow tarsus P:S03. below: Caspian Gull cachinnans P:S03 adult, July 11 2025, Marker Wadden, the Netherlands. Picture: Thijs Horst. |