Juvenile molting into first-basic plumage. Eastern Long Island in September. Photograph copyright of Andrew Guthrie©.

First-basic Plumage

Typical first basic individual. Far Rockaway, Queens, New York. Late October. Photograph copyright of Angus Wilson©.

Notice the extensive wear on the terials and wing coverts. Far Rockaway, Queens, New York. Late October. Photograph copyright of Angus Wilson©.

Detail of the head. Far Rockaway, Queens, New York. Late October. Photograph copyright of Angus Wilson©.

Adult Plumages

Typical adult in basic plumage. Riis Park, Queens, New York. Late October, a few weeks before migrating south for the winter. Photograph copyright of Angus Wilson©.
 

Literature

Grant, P.J. (1986) Gulls: A guide to identification. 2nd edition. Academic Press.

Copyright © 2002 All rights reserved. Angus Wilson
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