| Coordinators:Albert de Jong
 Leon Kelder
 Roland-Jan Buijs
 Thijs Horst
 Merijn Loeve
 Mars Muusse
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 | Herring Gull argenteus B / KJ 1CY,  2025,  IJmuiden, the Netherlands. Picture: Mars Muusse.
        
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            Please send in your observations of colour ringed birds to: ring@buijsecoconsult.nl |  Tibia  B/R-KJ and metal NLA 6.254.594, ringed as  pullus Larus argentatus on June 14 2025 at  Lelystad, the Netherlands. Ringed by Roland-Jan Buijs ringing team (Mars Muusse / Thijs Horst / Fred Cottaar).   Recoveries:07-08-2025 Velsen (Strand Noordpier), Noord-Holland, NL 5.228,00 N 433,00 E colourring read Fred Cottaar & Jan Zorgdrager
 26-08-2025 IJmuiden (Strand Zuidpier), Noord-Holland, NL 5.227,34 N 433,03 E colourring read T. Horst & M. Muusse &  Michel Boeken
 30-08-2025 IJmuiden (Strand Zuidpier), Noord-Holland, NL 5.227,34 N 433,03 E colourring read T. Horst & M. Muusse
 02-09-2025 IJmuiden (Strand Zuidpier), Noord-Holland, NL 5.227,34 N 433,03 E colourring read Jan Bijlsma & Martijn van Manen
 08-09-2025 IJmuiden (Strand Zuidpier), Noord-Holland, NL 5.227,34 N 433,03 E colourring read T. Horst & M. Muusse
 14-09-2025 IJmuiden (Strand Zuidpier), Noord-Holland, NL 5.227,34 N 433,03 E colourring read T. Horst, M. Muusse & F. Cottaar
 19-09-2025 IJmuiden (Strand Zuidpier), Noord-Holland, NL 5.227,34 N 433,03 E colourring read Fred Cottaar
 23-09-2025 Velsen (Strand Noordpier), Noord-Holland, NL 5.228,00 N 433,00 E colourring read T. Horst & M. Muusse & Jacos Jes
 25-09-2025 IJmuiden (Kennemerstrand), Noord-Holland, NL 5.226,55 N 433,03 E colourring read Jan Zorgdrager
 28-09-2025 IJmuiden (Haringhaven), Noord-Holland, NL 5.227,29 N 435,03 E colourring read T. Horst, M. Muusse & F. Cottaar
 Data for this nest in 2025: 
        
        
        
        
        
        
        
        
        
        
        
        
        
        
        
        
        
        
        
          | date | darvic | metal | nest | species | sexe | age | wing | mass | head+ bill | bill | gonys | barcode | comments |  
          | 14-6-2025 | B/R-KJ | .6254594 | blokken dam 1 | ZM |  | pullus |  | 633 |  |  |  |  | Ringed pullus |  
          | 25-6-2025 | B/R-KJ | .6254594 | blokken dam 1 | ZM |  | pullus |  | 726 |  |  |  |  |  |  below: Herring Gull argenteus B / KJ 1CY, September 28 2025,  IJmuiden, the Netherlands. Picture: Mars Muusse.
 below: Herring Gull argenteus B / KJ 1CY, September 23 2025,  IJmuiden, the Netherlands. Picture: Mars Muusse.
 below: Herring Gull argenteus B / KJ 1CY, September 08 2025,  IJmuiden, the Netherlands. Picture: Mars Muusse.
 below: Herring Gull argenteus B / KJ 1CY, August 26 2025,  IJmuiden, the Netherlands. Picture: Mars Muusse.
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