Range. - Arctic regions, south in winter to Long Island, the Great Lakes, and San Francisco Bay.

This Gull shares with the Great Black-backed Gull the honor of being the largest of the Gulls, being 28 inches in length. Mantle light gray; it is distinguished by its size and the primaries, which are white to the tips. A powerful zird that preys upon the smaller Gulls and also devours the young and eggs of smaller birds.

They nest on the ground on the islands and shores of Hudson Bay, Greenland, etc. The nest is made of seaweed, grass and moss and is generally quite bulky. The two or three eggs are laid in June. They are of various shades of color from a light drab to a brownish, and are spotted with brownish and black. Size about 3 x 2.20.

42 Glaucous Gull Larus Hyperboreus 89

42.1. Point Barrow Gull. Larus Barrovianus

Range. - Northwest coast from Bering Sea to Point Barrow.

This species is almost identical with the Glau-cus Gull, averaging perhaps a trifle smaller. Its standing as a distinct species is still questioned and has not yet been decided satisfactorily. Early in June their nests are built on remote islands in Bering Sea. These nests are the same as the last species, large piles of vegetation, hollowed on top for the reception of the eggs. The eggs have the same variations in color and markings as the Glaucus Gull. Size 3 x 2.10. Data. - Herschel Is.,

Alaska, July 1, 1900. Nest made of seaweed and grass; placed on the ground.

Three eggs. Collector, Rev. I. O. Stringer.