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Herring Gull (argenteus) Y.CNT adult, August 19 2020, IJmuiden, the Netherlands. Picture: Mars Muusse.Ringed as breeding adult in season 2018 at Forteiland, IJmuiden. Ringed by Fred Cottaar ringing team. below: Herring Gull (argenteus) Y.CNT >6CY, August 19 2020, IJmuiden, the Netherlands. Picture: Mars Muusse.P7-P10 old. |
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