snow goose

from The American Heritage® Dictionary of the English Language, 5th Edition.

• noun A goose (Chen caerulescens) of North America and Siberia that has two color forms, one with white plumage and black wingtips and the other with bluish-gray plumage and a white head.

from The Century Dictionary.

• noun A goose of the genus Chen, of which the white brant. C. hyperboreus, is the best-known species, white, with black-tipped wings, the head washed with rusty-brown, and the bill pink. Also called Mexican goose, red goose, Texas goose. See wavey, and cut under Chen.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

• noun blue goose in the white color phase