| Coordinators:Albert de Jong
 Leon Kelder
 Roland-Jan Buijs
 Thijs Horst
 Merijn Loeve
 Mars Muusse
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 | Caspian Gull cachinnans  0|7 2CY-3CY,   2024-2025, colony De Kreupel, the Netherlands.  Picture: Thijs Horst & Mars Muusse.Tibia  G-0|7 and metal NLA 5.629.623, ringed as  pullus Larus cachinnans on May 12 2023 at De Kreupel, Holland (5247.00 N 513.00 E). 
      Ringer  Leon Kelder. Recoveries:04-05-2024 Almere (De Vaart), Flevoland, NL 5.224,00 N 514,00 E colourring read Eric Roeland
 28-07-2024 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
 30-07-2024 IJsselmeer (De Kreupel), Noord-Holland, NL 5.247,00 N 513,00 E colourring read J. van Assema & T. Horst
 05-08-2024 IJsselmeer (De Kreupel), Noord-Holland, NL 5.247,00 N 513,00 E colourring read T. Horst, M. Muusse & T. Muusse
 08-04-2025 IJsselmeer (De Kreupel), Noord-Holland, NL 5.247,00 N 513,00 E colourring read T. Horst & M. Muusse
 below: Caspian Gull cachinnans  0|7 3CY, April 08 2025, colony De Kreupel, the Netherlands. Picture: Thijs Horst & Mars Muusse.
 
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 below: Caspian Gull cachinnans  0|7 2CY, August 05 2024,   colony De Kreupel, the Netherlands.  Picture: Thijs Horst.
 below: Caspian Gull cachinnans  0|7 2CY, July 30 2024, colony De Kreupel, the Netherlands.  Picture: Thijs Horst.
 below: Caspian Gull cachinnans  0|7 2CY, July 28 2024, colony De Kreupel, the Netherlands.  Picture: Thijs Horst & Mars Muusse.
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