| Coordinators:Albert de Jong
 Leon Kelder
 Roland-Jan Buijs
 Thijs Horst
 Merijn Loeve
 Mars Muusse
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 | Caspian Gull cachinnans  P|X 1CY, May 2025, colony De Kreupel, the Netherlands.
        
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            Please send in your observations of colour ringed birds to: ring@buijsecoconsult.nl |  Tibia  G-P|X and NLA 5.639.051, ringed as pullus Larus cachinnans on 9-5-2025 at IJsselmeer (De Kreupel), Noord-Holland, by ringer Leon Kelder. Recoveries:07-08-2025 Gosport (Strand), Hampshire, ENGELAND 5.047,00 N 110,00 W colourring read Bertie Harding
 Data for nest Q49 - 2025. 
        
        
        
        
        
        
        
        
        
        
        
        
          | Metal    ring | Colour ring | Date | Species | Age | Clutch size | Location | Nest code | Ringer | Head+Bill | Mass | Wing | Parents |  
          | NLA 5639050 | g-P|W | 09-5-2025 | Caspian Gull | pullus | 2 eggs | the Netherlands, De Kreupel - eiland Q. | Q49 | Leon Kelder | 51,7 | 72,0 |  |  |  
          | NLA 5639050 | g-P|W | 16-5-2025 | Caspian Gull | pullus | -- | the Netherlands, De Kreupel - eiland Q. | Q49 | Leon Kelder |  |  |  |  
          | NLA 5639051 | g-P|X | 09-5-2025 | Caspian Gull | pullus | 2 eggs | the Netherlands, De Kreupel - eiland Q. | Q49 | Leon Kelder | 51,1 | 71,0 |  |  |  Caspian Gull cachinnans  P|X 1CY, August 07 2025, Gosport - Hampshire, England. Picture: Bertie Harding.
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