| Coordinators:Albert de Jong
 Leon Kelder
 Roland-Jan Buijs
 Thijs Horst
 Merijn Loeve
 Mars Muusse
 Home Project InfoInternational trend
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 Breeding biology
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 | Caspian Gull cachinnans  2|6 1CY, July 24 2023,   England & Spain. Picture: Josh Jones & Pablo Fernández García.Tibia  G-2|6 and metal NLA 5.623.842, ringed as  pullus Larus cachinnans on May 12 2023 at De Kreupel, Holland (5247.00 N 513.00 E). 
      Ringer  Leon Kelder. Recoveries:30-06-2023 IJsselmeer (De Kreupel), Noord-Holland, NL 5.247,00 N 513,00 E colourring read Leon Kelder
 01-07-2023 IJsselmeer (De Kreupel), Noord-Holland, NL 5.247,00 N 513,00 E colourring read 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
 24-07-2023 Tanholt (Cat's Water), Cambridgeshire, ENGELAND 5.235,00 N 10,00 W colourring read Josh Jones
 01-03-2025 Ribadeo (Strand), Lugo, SPANJE 4.333,00 N 707,00 W colourring read Pablo Fernández García
 below: Caspian Gull cachinnans  2|6 2CY, March 01 2025,  Ribadeo - Lugo, Spain. Picture: Pablo Fernández García.
 below: Caspian Gull cachinnans  2|6 1CY, July 24 2023,  Tanholt - Cambridgeshire, England. Picture: Josh Jones.
 
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