| Coordinators:Albert de Jong
 Leon Kelder
 Roland-Jan Buijs
 Thijs Horst
 Merijn Loeve
 Mars Muusse
 Home Project InfoInternational trend
 National trend
 Site characteristics
 Breeding biology
 Fecundity
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 Nonbreeding season
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   | Caspian Gull cachinnans  3|5 1CY,  July 29 2023, Cromer - Norfolk, England. Picture: Rob Lee.Tibia  G-3|5 and metal NLA 5.623.878, ringed as  pullus Larus cachinnans on May 19 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
 29-07-2023 Cromer (Strand), Norfolk, ENGELAND 5.255,00 N 118,00 E colourring read Rob Lee
 07-06-2024 IJsselmeer (De Kreupel), Noord-Holland, NL 5.247,00 N 513,00 E colourring read Leon Kelder
 below: Caspian Gull cachinnans  3|5 1CY,  July 29 2023, Cromer - Norfolk, England. Picture: Rob Lee.
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