| Coordinators:Albert de Jong
 Leon Kelder
 Roland-Jan Buijs
 Thijs Horst
 Merijn Loeve
 Mars Muusse
 Home Project InfoInternational trend
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 | Caspian Gull cachinnans  L|T 1CY, May 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 |  Data for nest C10 - 2025. 
        
        
        
        
        
        
        
        
        
        
        
        
          | Metal    ring | Colour ring | Date | Species | Age | Clutch size | Location | Nest code | Ringer | Head+Bill | Mass | Wing | Parents |  
          | NLA 5639006 | g-L|R | 02-5-2025 | Caspian Gull | pullus | 2 eggs | the Netherlands, De Kreupel -  eiland C. | C10 | Leon Kelder | 49,2 | 75,0 |  |  |  
          | NLA 5639007 | g-L|S | 02-5-2025 | Caspian Gull | pullus | 2 eggs | the Netherlands, De Kreupel -     eiland C. | C10 | Leon Kelder | 53,1 | 92,0 |  |  |  
          | NLA 5639007 | g-L|S | 09-5-2025 | Caspian Gull | pullus | 2 eggs | the Netherlands, De Kreupel - eiland C. | C10 | Leon Kelder |  |  |  |  
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          | NLA 5639008 | g-L|T | 09-5-2025 | Caspian Gull | pullus | 2 eggs | the Netherlands, De Kreupel - eiland C. | C10 | Leon Kelder |  |  |  |    |