| Coordinators:Albert de Jong
 Leon Kelder
 Roland-Jan Buijs
 Thijs Horst
 Merijn Loeve
 Mars Muusse
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 | Caspian Gull cachinnans  5|6 2CY, July-December  2024, the Netherlands.  Picture: A.J. Laansma, Thijs Horst & Mars Muusse.Tibia  G-5|6 and metal NLA 5.629.707, ringed as  pullus Larus cachinnans on June 30 2023 at De Kreupel, Holland (5247.00 N 513.00 E). 
  Ringer  Leon Kelder. Recoveries:28-11-2023 Fresnes-sur-Marne (Vuilstort), Seine-et-Marne, FRANKRIJK 4.857,00 N 243,00 E colourring read Rémi Jugieux
 12-06-2024 IJsselmeer (De Kreupel), Noord-Holland, NL 5.247,00 N 513,00 E colourring read Leon Kelder
 22-06-2024 IJsselmeer (De Kreupel), Noord-Holland, NL 5.247,00 N 513,00 E colourring read Leon Kelder
 16-07-2024 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
 17-12-2024 Enkhuizen (Sluizen), Noord-Holland, NL 5.241,00 N 517,00 E colourring read A.J. Laansma
 below: Caspian Gull cachinnans  5|6 2CY, December 17 2024, Enkhuizen, the Netherlands.  Picture: A.J. Laansma.
 below: Caspian Gull cachinnans  5|6 2CY, July 28 2024, colony De Kreupel, the Netherlands.  Picture: Thijs Horst & Mars Muusse.
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