| Coordinators:Albert de Jong
 Leon Kelder
 Roland-Jan Buijs
 Thijs Horst
 Merijn Loeve
 Mars Muusse
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 | Caspian Gull cachinnans T|Z 1CY, 2025,  colony Lelystad, the Netherlands.
        
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            Please send in your observations of colour ringed birds to: ring@buijsecoconsult.nl |  Tibia  G-T|Z and metal NLA 5.641.853, ringed as  pullus Larus cachinnans on May 25 2025 at  Lelystad, the Netherlands. Ringed by Roland-Jan Buijs ringing team (Mars Muusse / Thijs Horst / Fred Cottaar).   Recoveries:29-06-2025 Lelystad (Bataviahaven), Flevoland, NL 5.230,00 N 525,00 E colourring read T. Horst & M. Muusse
 09-07-2025 Lelystad (Bataviahaven), Flevoland, NL 5.230,00 N 525,00 E colourring read T. Horst & M. Muusse
 Data for this nest in 2025: 
        
        
        
        
        
        
        
        
        
        
        
        
        
        
        
        
        
        
        
          | date | darvic | metal | nest | species | sexe | age | wing | mass | head+ bill | bill | gonys | barcode | comments |  
          | 25-05-2025 | G-T|Z | .5641853 | 38 | PONT |  | pullus |  | 364 | 77,2 |  |  |  | Ringed pullus |  
          | 09-06-2025 | G-T|Z | .5641853 | 38 | PONT |  | pullus |  | 775 |  |  |  |  |  |  
          | 14-06-2025 | G-T|Z | .5641853 | dam 2 WATER | PONT |  | pullus | 259 | 803 |  |  |  |  |  |  |