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Herring Gull (argenteus) Y.CTU adult, 2019-2023, IJmuiden, the Netherlands. Picture: Maarten van Kleinwee & Mars Muusse.
Ringed with metal ring, as pullus in breeding season 2007 at Forteiland, IJmuiden. Ringed by Fred Cottaar ringing team.
Then trapped at the nest as 13CY incubating eggs on May 10 2019 at Forteiland (Puinhelling zuid), and green ring added.
below: Herring Gull (argenteus) Y.CTU 17CY, August 08 2023, IJmuiden, the Netherlands. Picture: Mars Muusse.

below: Herring Gull (argenteus) Y.CTU 13CY, May 10 2019, IJmuiden, the Netherlands. Picture: Maarten van Kleinwee.




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