| Coordinators:Albert de Jong
 Leon Kelder
 Roland-Jan Buijs
 Thijs Horst
 Merijn Loeve
 Mars Muusse
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 | Caspian Gull cachinnans M|4 adult, April 25 2025,  colony Lelystad, the Netherlands.
        
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            Please send in your observations of colour ringed birds to: ring@buijsecoconsult.nl |  Tibia  G-M|4 and metal NLA 5.641.005, ringed as  breeding adult Larus cachinnans on April 25 2025 at  Lelystad, the Netherlands. Ringed by Roland-Jan Buijs ringing team (Mars Muusse / Thijs Horst / Fred Cottaar).   Recoveries:=
 Data for this nest in 2025: 
        
        
        
        
        
        
        
        
        
        
        
        
        
        
        
        
        
        
        
          | date | darvic | metal | nest | species | sexe | age | wing | mass | head+ bill | bill | tarsus | gonys | barcode | greyscale | comments |  
          | 25-4-2025 | G-M|4 | .5641005 | blauwe touw | PONT | F | >4CY | 455 | 935 | 122,5 | 52,4 | 68,3 | 18,3 | 25B00545 |  | Trapped by    ringer. Breeder on 3 eggs. |  |