| Coordinators:Albert de Jong
 Leon Kelder
 Roland-Jan Buijs
 Thijs Horst
 Merijn Loeve
 Mars Muusse
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   | Caspian Gull cachinnans  1|P 2CY, July  2024, colony De Kreupel, the Netherlands.  Picture: Thijs Horst & Mars Muusse.Tibia  G-1|P and metal NLA 5.623.824, ringed as  pullus Larus cachinnans on May 12 2023 at De Kreupel, Holland (5247.00 N 513.00 E). 
      Ringer  Leon Kelder. Recoveries:02-07-2023 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
 06-07-2023 IJsselmeer (De Kreupel), Noord-Holland, NL 5.247,00 N 513,00 E colourring read Leon Kelder
 29-11-2023 Tilburg (Vuilstort), Noord-Brabant, NL 5.136,00 N 504,00 E colourring read Tim Raats
 22-06-2024 IJsselmeer (De Kreupel), Noord-Holland, NL 5.247,00 N 513,00 E colourring read Leon Kelder
 28-07-2024 IJsselmeer (De Kreupel), Noord-Holland, NL 5.247,00 N 513,00 E colourring read T. Horst & M. Muusse
 18-08-2024 Kornwerderzand (Afsluitdijk), Friesland, NL 5.301,00 N 512,00 E colourring read Frank van der Meer
 below: Caspian Gull cachinnans  1|P 2CY, July 28 2024, colony De Kreupel, the Netherlands.  Picture: Thijs Horst & Mars Muusse.
 
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