| Coordinators:Albert de Jong
 Leon Kelder
 Roland-Jan Buijs
 Thijs Horst
 Merijn Loeve
 Mars Muusse
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 | Caspian Gull cachinnans  S|1 1CY, July 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-S|1 and metal Arnhem NLA 5.639.057, ringed as  pullus Larus  cachinnans on May 09 2025 at IJsselmeer (De Kreupel), Holland (5247.00 N 513.00 E), by ringer Leon Kelder. Recoveries:16-05-2025 IJsselmeer (De Kreupel), Noord-Holland, NL 5.247,00 N 513,00 E captured by ringer Leon Kelder
 13-07-2025 IJsselmeer (De Kreupel), Noord-Holland, NL 5.247,00 N 513,00 E colourring read T. Horst, M. Muusse & N. Colpaert
 18-07-2025 IJsselmeer (De Kreupel), Noord-Holland, NL 5.247,00 N 513,00 E colourring read T. Horst & M. Loeve
 Data for nest Q28 - 2025. 
        
        
        
        
        
        
        
        
        
        
        
        
          | Metal    ring | Colour ring | Date | Species | Age | Clutch size | Location | Nest code | Ringer | Head+Bill | Mass | Wing | Parents |  
          | NLA 5639056 | g-S|0 | 09-5-2025 | Caspian Gull | pullus | 2 eggs | the Netherlands, De Kreupel - eiland Q. | Q28 | Leon Kelder | 51,9 | 83,0 |  |  |  
          | NLA 5639057 | g-S|1 | 09-5-2025 | Caspian Gull | pullus | 2 eggs | the Netherlands, De Kreupel - eiland Q. | Q28 | Leon Kelder | 50,5 | 69,0 |  |  |  
          | NLA 5639057 | g-S|1 | 16-5-2025 | Caspian Gull | pullus | -- | the Netherlands, De Kreupel - eiland Q. | Q28 | Leon Kelder |  |  |  |  below: Caspian Gull cachinnans S|1 1CY, July 13 2025, colony De Kreupel, the Netherlands. Picture: Thijs Horst & Mars Muusse..JPG)
 
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