| 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  P|V 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 Q11 - 2025. 
        
        
        
        
        
        
        
        
        
        
        
        
          | Metal    ring | Colour ring | Date | Species | Age | Clutch size | Location | Nest code | Ringer | Head+Bill | Mass | Wing | Parents |  
          | NLA 5639047 | g-P|T | 09-5-2025 | Caspian Gull | pullus | 3 eggs | the Netherlands, De Kreupel - eiland Q. | Q11 | Leon Kelder | 54,1 | 95,0 |  |  |  
          | NLA 5639048 | g-P|U | 09-5-2025 | Caspian Gull | pullus | 3 eggs | the Netherlands, De Kreupel - eiland Q. | Q11 | Leon Kelder | 52,5 | 71,0 |  |  |  
          | NLA 5639049 | g-P|V | 09-5-2025 | Caspian Gull | pullus | 3 eggs | the Netherlands, De Kreupel - eiland Q. | Q11 | Leon Kelder | 48,7 | 64,0 |  |  |  
          | NLA 5639049 | g-P|V | 16-5-2025 | Caspian Gull | pullus | -- | the Netherlands, De Kreupel - eiland Q. | Q11? | Leon Kelder |  |  |  |    |