Plate CCLXXXVII.
Bill moderately stout, yellow, feet black; wings an inch and a half
longer than the tail; plumage pure white. After the second moult, the
bill dusky for two-thirds, yellow at the end, feet black; plumage
white, the forehead and sides of the head mottled with leaden-grey,
most of the wing-coverts with, a greyish-black spot towards the end;
the quills, large coverts, and tail-feathers similarly marked, the
markings on the tail forming a subterminal bar.
_Adult_, 19, 41.
Accidental on the coast of the United States. Common in winter in
Labrador and Newfoundland. Breeds in high latitudes.
Larus eburneus, Bonap. Syn. p. 360.
Larus eburneus, Ivory Gull, Swains. & Rich. F. Bor. Amer.
Ivory Gull, Nutt. Man. v. ii. p. 301.
Ivory Gull, Larus eburneus, Aud. Orn. Biog. v. iii. p. 571.
448. 8. Larus zonorhynchus, Richardson. Ring-billed Gull.--Common
American Gull.
Plate CCXII. Adult and Young.
Bill stout, compressed, greenish-yellow, with a broad band of black
opposite the prominence; wings two inches and a half longer than the
tail; feet greenish-yellow; general colour of the plumage pure white,
excepting the back and upper surface of the wings, which are light
greyish-blue; the first-six quills black towards their extremities,
the first and second being almost entirely so, the sixth with only a
small spot; the tips of these feathers white, the first moreover with
a long patch of white, over its whole breadth, the second with a
smaller patch, not occupying the entire breadth, sometimes confined to
the inner web, the other quills white at the end. Young after second
moult with the bill black, the feet purplish-grey; general colour of
plumage dull white, mottled with greyish-brown beneath, on the back
with large brownish-black spots, the dark markings being central;
anterior to the eye a crescent of greyish-black; outer primary quills
black, terminally edged with white.
_Adult_, 20, 48.
Common during winter from Texas, along the coast, to Maine. Up the
Mississippi to Natchez. Breeds from Maine to Labrador, Hudson's Bay,
and Arctic shores. Columbia River. Migratory.
Larus canus, Mew or Common Gull, Rich. & Swains. F. Bor. Amer.
v. ii. p. 420.
Larus zonorhynchus, Ring-billed Mew-Gull, Ibid. p. 421.
Larus brachyrhynchus, Short-billed Mew-Gull, Ibid. p. 422.
Ring-billed Mew-Gull, Nutt. Man. v. ii. p. 300.
Common American Gull, Larus zonorhynchus. _Aud._ Orn. Biog. v.
iii. p. 98; v. v. p. 638.