The Lesser Black-backed Gull is about the size of a California Gull but slimmer looking. In adult plumage, attained in four years, it is like no other gull in Washington: dark gray mantle (darker than our local race of Western Gull), yellow legs, yellow eye, white head in breeding plumage streaked brown in winter. Immature plumages are more complicated and better covered in field guides than is possible here.

 

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