Lesser Black-backed Gull graellsii xx (formerly EX27) 19CY, May 31 2015, Maasvlakte, the Netherlands. Picture: Merijn Loeve.
Ringed as pullus on 21 June 1997 at Dintelhaven-Maasvlakte, Zuid-Holland, the Netherlands. Now in 19CY. Trapped by ringing team Roland-Jan Buijs (see: Buijs Ecoconsult BLOG).
Complete moult just started with P1 dropped. Black on P4 outerweb.
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EX27 just before it was trapped on the nest. Bird is a bit slate grey and bare parts not saturated.
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