| 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|4 1CY, April-June 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 Q2 - 2025. 
        
        
        
        
        
        
        
        
        
        
        
        
          | Metal    ring | Colour ring | Date | Species | Age | Clutch size | Location | Nest code | Ringer | Head+Bill | Mass | Wing | Parents |  
          | NLA 5632574 |  | 25-4-2025 | Caspian Gull | pullus | 3 eggs | the Netherlands, De Kreupel -     eiland Q. | Q2 | Leon Kelder | 53,8 | 83,0 |  |  |  
          | NLA 5632574 | g-L|4 | 02-5-2025 | Caspian Gull | pullus | 3 eggs | the Netherlands, De Kreupel -     eiland Q. | Q2 | Leon Kelder | 73,3 | 276,0 |  |  |  
          | NLA 5632574 | g-L|4 | 06-6-2025 | Caspian Gull | pullus | 3 eggs | the Netherlands, De Kreupel - eiland Q. | Q2 | Leon Kelder | 112,1 | 499,0 | 294,5 |  |  
          | NLA 5632574 | g-L|4 | 13-6-2025 | Caspian Gull | pullus | 3 eggs | the Netherlands, De Kreupel - eiland Q. | Q2 | Leon Kelder |  |  |  |  
          | NLA 5632575 |  | 25-4-2025 | Caspian Gull | pullus | 3 eggs | the Netherlands, De Kreupel -     eiland Q. | Q2 | Leon Kelder | 56,7 | 104,0 |  |  |  
          | NLA 5632575 | g-L|5 | 02-5-2025 | Caspian Gull | pullus | 3 eggs | the Netherlands, De Kreupel -     eiland Q. | Q2 | Leon Kelder | 77,5 | 383,0 | 60,0 |  |  
          | NLA 5632576 |  | 25-4-2025 | Caspian Gull | pullus | 3 eggs | the Netherlands, De Kreupel -     eiland Q. | Q2 | Leon Kelder | 55,8 | 97,0 |  |  |  
          | NLA 5632576 | g-L|6 | 02-5-2025 | Caspian Gull | pullus | 3 eggs | the Netherlands, De Kreupel -     eiland Q. | Q2 | Leon Kelder | 77,2 | 355,0 | 64,5 |  |      |