| Coordinators:Albert de Jong
 Leon Kelder
 Roland-Jan Buijs
 Thijs Horst
 Merijn Loeve
 Mars Muusse
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 | Caspian Gull cachinnans  P|G 1CY, July 2025, colony De Kreupel, the Netherlands.
        
          | You can participate in this project too! 
            Please send in your observations of colour ringed birds to: ring@buijsecoconsult.nl |  Tibia G-P|G and metal NLA 5.639.037, ringed as  pullus Larus cachinnans on May 09 2025 at IJsselmeer (De Kreupel), Noord-Holland, by ringer Leon Kelder. Recoveries:13-07-2025 IJsselmeer (De Kreupel), Noord-Holland, NL 5.247,00 N 513,00 E colourring read T. Horst, M. Muusse & N. Colpaert
 Data for nest Q26 - 2025. 
        
        
        
        
        
        
        
        
        
        
        
        
          | Metal    ring | Colour ring | Date | Species | Age | Clutch size | Location | Nest code | Ringer | Head+Bill | Mass | Wing | Parents |  
          | NLA 5639036 | g-P|F | 09-5-2025 | Caspian Gull | pullus | 2 eggs | the Netherlands, De Kreupel - eiland Q. | Q26 | Leon Kelder | 51,9 | 80,0 |  |  |  
          | NLA 5639037 | g-P|G | 09-5-2025 | Caspian Gull | pullus | 2 eggs | the Netherlands, De Kreupel - eiland Q. | Q26 | Leon Kelder | 52,6 | 86,0 |  |  |  below: Caspian Gull cachinnans P|G 1CY, July 13 2025, colony De Kreupel, the Netherlands. Picture: Thijs Horst & Mars Muusse..JPG)
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