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|V 1CY, August 30 2023, Medemblik, the Netherlands. Picture: Jeroen Assema.
Tibia G-3|V and metal NLA 5.623.901, 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
03-07-2023 IJsselmeer (De Kreupel), Noord-Holland, NL 5.247,00 N 513,00 E colourring read Leon Kelder
04-07-2023 IJsselmeer (De Kreupel), Noord-Holland, NL 5.247,00 N 513,00 E colourring read Leon Kelder
21-07-2023 Wervershoof (Vooroever), Noord-Holland, NL 5.245,00 N 507,00 E colourring read Wim de Lange
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
Relatives in nest are g-3|V, g-3|W & g-3|X.
below: Caspian Gull cachinnans x Herring Gull argenteus hybrid 3|V 1CY, August 30 2023, Medemblik, the Netherlands. Picture: Jeroen Assema.

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