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 x Herring Gull argenteus hybrid 3|X 1CY, August 2023, Medemblik, the Netherlands. Picture: Wim de Lange & Jeroen Assema.

Tibia G-3|X and metal NLA 5.623.903, ringed as pullus L. argentatus x L. cachinnans hybrid on May 19 2023 at De Kreupel, Holland (5247.00 N 513.00 E). Ringer Leon Kelder.

Recoveries:
23-06-2023 IJsselmeer (De Kreupel), Noord-Holland, NL 5.247,00 N 513,00 E captured by ringer Leon Kelder
26-07-2023 Wervershoof (Vooroever), Noord-Holland, NL 5.245,00 N 507,00 E colourring read Jeroen van Assema
30-07-2023 Wervershoof (Vooroever), Noord-Holland, NL 5.245,00 N 507,00 E colourring read Jeroen van Assema
11-08-2023 Wervershoof (Vooroever), Noord-Holland, NL 5.245,00 N 507,00 E colourring read Wim de Lange
12-08-2023 Medemblik (Marina), Noord-Holland, NL 5.246,00 N 507,00 E colourring read Wim de Lange
26-08-2023 Medemblik (Marina), Noord-Holland, NL 5.246,00 N 507,00 E colourring read Wim de Lange

Relatives in nest are g-3|V, g-3|W & g-3|X.

below: Caspian Gull cachinnans x Herring Gull argenteus hybrid 3|X 1CY, August 30 2023, Medemblik, the Netherlands. Picture: Jeroen Assema.

below: Caspian Gull cachinnans x Herring Gull argenteus hybrid 3|X 1CY, August 12 2023, Medemblik, the Netherlands. Picture: Wim de Lange.