Lesser Black-backed Gull (graellsii & intermedius)

(last update: May 17 2015)

Lesser Black-backed Gull graellsii BTO FP778xx adult, May 02 2017, Hoornderslag - Texel, the Netherlands.

Code not read completely, but probably ringed as adult in winter. Could be a British bird now breeding in the Netherlands, or more likely a wintering bird trapped in Britain.