| Coordinator: Albert de Jong
 Merijn Loeve
 Roland-Jan Buijs
 Thijs Horst
 Leon Kelder
 Mars Muusse
 Home Project InfoInternational trend
 National trend
 Site characteristics
 Breeding biology
 Fecundity
 Food resources
 Nonbreeding season
 Breeding species
 Hybrid scores
 Ring codes
 Future
 Nests at De Kreupel 2020nest  r-02P4 20
 nest y-X804 20
 nest D01 20
 nest D02 20
 nest D03 20
 nest L01 20
 nest L02 20
 nest L03 20
 nest M02 20
 Nests at De Kreupel 2021nest  r-02P4 20
 nest w-201U 21
 nest g-XLHD 21
 nest r-KA 21
 nest r-KB 21
 nest r-KC 21
 nest r-KD 21
 nest r-KE 21
 nest r-KF 21
 nest r-KH 21
 nest r-KJ 21
 nest r-KK 21
 nest A01 21
 nest C03 21
 nest C04 21
 nest C06 21
 nest D01 21
 nest D03 21
 nest D05 21
 nest D06 21
 nest D07 21
 nest D08 21
 nest E01 21
 nest H01 21
 nest L01 21
 nest L02 21
 nest L05 21
 nest L06 21
 nest L07 21
 nest M01 21
 nest M04 21
 nest M06 21
 nest Q01 21
 | Caspian Gull cachinnans P:6P8 5CY, July 2024, colony De Kreupel, the Netherlands. Picture: Thijs Horst & Mars Muusse.Caspian Gull (Larus cachinnans) with yellow tarsus P:6P8. Ringed as pullus on June 11 2020 in a  mixed colony  (Larus cachinnans kolonia) at Zbiornik Mietkowski, Poland.
 Recoveries:      
 
  
    
      | 11/06/2020 | Zbiornik Mietkowski        POLAND (DOLNOŚLĄSKIE) | ODRA - 
        Paweł Grochowski |  
      | 11/06/2020 | Zbiornik Mietkowski        POLAND (DOLNOŚLĄSKIE) | ODRA - 
        Jacek Betleja |  
      | 06/07/2020 | Jezioro Maltańskie,Poznań        POLAND (WIELKOPOLSKIE) | Maciej Gierszewski |  
      | 11/07/2020 | Dalsze:wysypisko śmieci        POLAND (ZACHODNIOPOMORSKIE) | Lech Antkowiak - 
        KULING |  
      | 12/10/2020 | Westkapelle, Zuiderhoofd        NETHERLANDS (ZEELAND) | Joop Scheijbeler |  
      | 12/10/2020 | Westkapelle        NETHERLANDS (ZEELAND) | Egbert Vrieling |  
      | 27/10/2020 | Bloemendaal        NETHERLANDS (NOORD-HOLLAND) | R R |  
      | 01/04/2021 | Katwijk        NETHERLANDS (ZUID-HOLLAND) | Annelies Marijnis |  
      | 14/05/2021 | Meijendel beach, Wassenaar        NETHERLANDS (ZUID-HOLLAND) | Peter Spierenburg |  
      | 01/12/2021 | IJmuiden, Loggerstraat        NETHERLANDS (NOORD-HOLLAND) | Jan Zorgdrager |  
      | 07/01/2023 | Halterner Stausee, Haltern am See        GERMANY (NORDRHEIN-WESTFALEN: MÜNSTER) | A. C. |  
      | 12/02/2023 | Andernach:Rheinhafen        GERMANY (RHEINLAND-PFALZ: KOBLENZ) | Mathias Jönck |  
      | 28/05/2023 | IJsselmeer, Enkhuizen, De Kreupel eiland L. NETHERLANDS (FLEVOLAND) | Leon Kelder |  
      | 28/07/2024 | De Kreupel NETHERLANDS (FLEVOLAND) | thijs horst & 
        Mars Muusse |  below: Caspian Gull cachinnans P:6P8 5CY, July 2024, colony De Kreupel, the Netherlands. Picture: Thijs Horst & Mars Muusse.
 
 
 |