| 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
 Food resources
 Nonbreeding season
 Breeding species
 Hybrid scores
 Ring codes
 Future
   | Caspian Gull cachinnans  2|J 1CY-2CY, July  2023 - July 2024, Almere & De Kreupel, the Netherlands. Picture: Thijs Horst.Tibia  G-2|J and metal NLA 5.623.854, ringed as  pullus Larus cachinnans on May 12 2023 at De Kreupel, Holland (5247.00 N 513.00 E). 
      Ringer  Leon Kelder. Recoveries:04-07-2023 IJsselmeer (De Kreupel), Noord-Holland, NL 5.247,00 N 513,00 E colourring read Leon Kelder
 07-07-2023 IJsselmeer (De Kreupel), Noord-Holland, NL 5.247,00 N 513,00 E colourring read Leon Kelder
 25-07-2023 Almere (De Vaart), Flevoland, NL 5.224,00 N 514,00 E colourring read Thijs Horst
 08-07-2024 IJsselmeer (De Kreupel), Noord-Holland, NL 5.247,00 N 513,00 E colourring read Leon Kelder
 15-07-2024 IJsselmeer (De Kreupel), Noord-Holland, NL 5.247,00 N 513,00 E colourring read Leon Kelder
 18-07-2024 IJsselmeer (De Kreupel), Noord-Holland, NL 5.247,00 N 513,00 E colourring read Leon Kelder
 30-07-2024 IJsselmeer (De Kreupel), Noord-Holland, NL 5.247,00 N 513,00 E colourring read J. van Assema & T. Horst
 below: Caspian Gull cachinnans  2|J 2CY, July 30 2024, colony De Kreupel, the Netherlands.  Picture: Thijs Horst.
 below: Caspian Gull cachinnans  2|J 1CY, July 25 2023, Almere, the Netherlands. Picture: Thijs Horst.
 |