Bonaparte's Gull (Chroicocephalus philadelphia) adult bird, West Chester Lagoon, Anchorage, AK. 4/29/2007.
by Grasmussen Jan 4, 2009 4:25 AM
Bonaparte's Gull (Chroicocephalus philadelphia) an immature bird, Anchorage, AK. 7/18/2008.
by Grasmussen Jan 4, 2009 4:53 AM
First winter plumage ...
by linthicum May 4, 2011 7:30 PM
A frequent visitor to our county in the fall.
by ducbucln Dec 8, 2011 4:24 PM
Monterey Bay, Ca. Photo courtesy of Ferd Bergholz. Copyright of Ferd Bergholz of Scotts Valley, California.
by Kell Mar 25, 2018 11:52 AM
Pointe Mouillee State Game Area on the Western shore of Lake Erie, near Flat Rock, Michigan. Photo courtesy of Ken Blackford. Copyright Ken Blackford. San Diego, Ca.
by Kell May 23, 2018 1:43 PM
