| 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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   | Caspian Gull cachinnans  0|E 2CY-3CY, December  2024 - April 2025, the Netherlands &  UK. Picture: Gerald Segelbacher & Benjamin Baatje. Tibia  G-0|E and metal NLA 5.629.630, ringed as  pullus Larus cachinnans on May 12 2023 at De Kreupel, Holland (5247.00 N 513.00 E). 
      Ringer  Leon Kelder. Recoveries: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
 08-07-2023 IJsselmeer (De Kreupel), Noord-Holland, NL 5.247,00 N 513,00 E colourring read Leon Kelder
 08-12-2024 Dover (Wellington Dock), Kent, ENGELAND 5.107,00 N 118,00 E colourring read Gerald Segelbacher
 17-04-2025 Harlingen (Haven), Friesland, NL 5.310,00 N 525,00 E colourring read Benjamin Baatje
 below: Caspian Gull cachinnans  0|E 3CY, April 17 2025, Harlingen, the Netherlands. Picture: Benjamin Baatje.
 
 below: Caspian Gull cachinnans  0|E 2CY, December 08 2024, Dover, UK. Picture: Gerald Segelbacher.    
 
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