American Herring Gull (smithsonianus)

(last update: October 30, 2015)

Amar Ayyash (US)
Bruce Mactavish (Canada)
Dave Brown (Canada)
Mars Muusse (Netherlands)

American Herring Gull (smithsonianus) 5cy, February 24 2008, St. John's, Newfoundland, Canada. Picture: Bruce Mactavish.

Sub-terminal black band on P10 broken at the shaft. Small mirror on P9 confined to inner-web. P8-P7 with black "bayonet" along outer edge, but 'bayonet-step' in black not obvious. P5 band broken at the centre, lacking drawn-out characteristic black W-pattern. Note vestiges of black on centre of primary coverts and in the rectrices, an indication of younger adult (5cy / 6cy).