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Herring Gull (argenteus) S.ACM adult, January 23 2022, Katwijk, the Netherlands. Picture: Mars Muusse.Ringed as adult in breeding season 2021 in Haarlem. below: Herring Gull (argenteus) S.ACM adult, January 23 2022, Katwijk, the Netherlands. Picture: Mars Muusse. |
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