Range. - Pacific Coast of North America from British Columbia south to Panama, breeding chiefly south of the United States border.
A very handsome species, often called the White-headed Gull, and wholly unlike any other; length seventeen inches. Adults, in summer, have the ntire head, neck and throat white, this shading quite abruptly into the slaty upper and upder parts; the primaries and tail are black, the latter and the secondaries being tipped with white. The legs and bill are vermilion. They are found off the coast of California, but are not believed to breed there. They are known to breed on some of the islands off the Mexican coast nesting on the ground the same as the other species. The three eggs are greenish drab in color and are marked with different shades of brown and lilac. Size 2.45 x 1.50.
Short-billed Gull. Heerman's Gull.