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Mating pair spotted at the Billy Frank Jr. Nisqually National Wildlife Refuge.
Thayer's gull is distinguished from the Herring gull by their dark eyes.
Larger gull with a light gray back and white belly. There is a red spot on the ...
Large sized gull but can be varied in size. Mature bird has Yellow bill with a ...
Adult Thayer's gull in nonbreeding plumage has a pale gray mantle, with ...
Thayer's gulls are relatively large seagulls with much of their body - head, ...
This is a non-breeding adult of the subspecies "Thayer's" There were very ...
First winter Thayer's subspecies. There were numerous of these among some ...
Adult Description Medium to large gull. Head and underparts white. Back light ...
Thayer's gull is a relatively large seagull with much of its body - head, neck, ...