Thayer's Gull

first winter
Washington, March

nonbreeding adult
Oregon, March

nonbreeding adult
British Columbia, February

first winter
Washington, November

third winter
Washington, November

nonbreeding adult
Washington, December

nonbreeding adult
Washington, November

nonbreeding adult
British Columbia, September

nonbreeding adult (Glaucous-winged on left)
Washington, December

nonbreeding adult
British Columbia, February

first winter
Washington, March

first winter
Washington, November