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Herring Gull (argenteus) Y.CFN 4CY, May 11 2019, Katwijk, the Netherlands. Picture: Mars Muusse.Ringed as pullus in breeding season 2016 at Forteiland, IJmuiden. Ringed by Fred Cottaar ringing team. below: Herring Gull (argenteus) Y.CFN 4CY, May 11 2019, Katwijk, the Netherlands. Picture: Mars Muusse. |
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