American Herring Gull (smithsonianus)(last update: October 30, 2015) |
|
Slaty-backed Gull (schistisagus) adult, January 25 2011, Choshi, Japan. Picture: Terry Townshend.Please visit Terry's blog Birding Beijing! Note broad white trailing edge on secondaries. Mirror merged with tip on P10. Medium mirror on P9. Pink legs. Only small gonys spot. |