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) sub-adult, September 03 2013, Stratford, CT, USA. Picture: Donna Rae Henault Caporaso.

P6/P9, with P6 just over P5 in length. Note dark patterned old rectrices, and white new central feathers. Extensive black on visible secondaries (exposed now the greater coverts have been dropped).