Gyrfalcon

Falco rusticolus

Audubon Illustration

John James Audubon, Birds of America (1827-1838). Public domain.

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About the Gyrfalcon

The gyrfalcon ( or ) (Falco rusticolus), also abbreviated as gyr, is a bird of prey and the largest species in the falcon family, Falconidae. A high-latitude species, the gyrfalcon breeds on the Arctic coasts and tundra, the islands of northern North America and Siberia, where it is mainly a resident species. Some gyrfalcons disperse more widely after the breeding season or in winter, and individual vagrancy can take birds for long distances. Its plumage varies with location, with birds being coloured from all-white to dark grey-brown. These colour variations are called morphs. Like other falcons, it shows sexual dimorphism, with the female much larger than the male. For centuries, the gyrfalcon has been valued as a hunting bird.

Source: Wikipedia

Classification

Scientific name: Falco rusticolus
Family: Falcons and Caracaras
Order: Falconiformes

Similar species

Other members of the falcons and caracaras family recorded in North America — a useful place to start if you are not certain of your identification.

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