| Coordinators:Albert de Jong
 Leon Kelder
 Roland-Jan Buijs
 Thijs Horst
 Merijn Loeve
 Mars Muusse
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   | Caspian Gull cachinnans  0|C 1CY,  colony De Kreupel, Holland.Tibia  G-0|C and metal NLA 5.629.628, ringed as  pullus Larus cachinnans on May 12 2023 at De Kreupel, Holland (5247.00 N 513.00 E). 
      Ringer  Leon Kelder. Recoveries:01-07-2023 IJsselmeer (De Kreupel), Noord-Holland, NL 5.247,00 N 513,00 E colourring read Leon Kelder
 13-06-2024 Kornwerderzand (Afsluitdijk), Friesland, NL 5.301,00 N 512,00 E colourring read Japke van Assen
 24-04-2025 Medemblik (Gemaal Lely), Noord-Holland, NL 5.246,00 N 506,00 E colourring read Renate Visscher
 29-06-2025 IJsselmeer (De Kreupel), Noord-Holland, NL 5.247,00 N 513,00 E colourring read Peter van Horssen
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