Yellow-legged
Gull michahellis 3CY-4CY I357 February 2005 & January 2006, Switzerland. Picture: Stephane Aubry.
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Ringed as pullus on June 02 2003 at Saline de Cervia (Ravenna), Italy.
below: michahellis 4CY I357 January 19 2006, Chevroux, Switzerland. Picture: Stephane Aubry.
Aged by combination of features: 3rd gen primaries with mirror on P10, adult-like bill but with more black; this combined with immature patterns on coverts (especially greater primary coverts) and often lower tertials or tail.
below: michahellis 3CY I357 February 21 2005, Estavayer-le-Lac, Switzerland. Picture: Stephane Aubry.
Pinkish legs and old 2nd gen primaries without mirror on P10.
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