| Coordinators:Albert de Jong
 Leon Kelder
 Roland-Jan Buijs
 Thijs Horst
 Merijn Loeve
 Mars Muusse
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 | Herring Gull argenteus B / KE 1CY,  2025,  IJmuiden, the Netherlands.
        
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            Please send in your observations of colour ringed birds to: ring@buijsecoconsult.nl |  Ring used in colony Lelystad 2025 for pullus. Chick found dead in colony, rings now re-used in IJmuiden harbour. Tibia  B/R-KE and metal NLA 6.254.618, ringed as  2CY male Larus argentatus on August 25 2025 at  IJmuiden (Harbour), the Netherlands. Ringed by Roland-Jan Buijs ringing team (Mars Muusse / Thijs Horst / Fred Cottaar).  Recoveries:18-09-2025 IJmuiden (Haven), Noord-Holland, NL 5.228,00 N 435,00 E colourring read Martijn van Manen
 18-09-2025 IJmuiden (Vissershaven), Noord-Holland, NL 5.227,35 N 435,26 E colourring read Jan Zorgdrager
 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
 02-10-2025 IJmuiden (Vissershaven), Noord-Holland, NL 5.227,35 N 435,26 E colourring read Jan Zorgdrager
 05-10-2025 IJmuiden (Haven), Noord-Holland, NL 5.228,00 N 435,00 E colourring read Martijn van Manen
 07-10-2025 Velsen (Strand Noordpier), Noord-Holland, NL 5.228,00 N 433,00 E colourring read Martijn van Manen
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