Atlantic Yellow-legged Gull (atlantis)
(last update: October 12, 2011)
Atlantic YLG 3cy May
data from: Malling Olsen, K. & Larsson, H. 2004 Gulls of Europe, Asia and North America. London: Christopher Helm.
here we continue with Third-winter plumage:
Third winter Somewhat similar to adult, but outer primaries and their coverts and secondaries dark, contrasting well with grey inner primaries. P10 may show narrow white mirror (P.]. Dubois in litt.). Head often as strongly dark-patterned as in adult, creating dark hood at distance. Upperparts (including upper lesser and median coverts) dark grey intermixed with brown. Underwing mainly white with unmoulted darker coverts in strong contrast. Shows traces of dark tail-bar (sometimes complete). Bill bi- or tricoloured: base pinkish, isolated from yellow tip by broad blackish sub-terminal bar, frequently covering >50% of bill.
|Atlantic YLG (atlantis) adult, May 08 2011, Canico - Madeira. Picture: Graham Ekins. Head and underparts clean white. 2nd gen secondaries and rectrices with dark centres. No mirror on P10.|