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Related to gyrfalcon: peregrine falcon


, gerfalcon
a very large rare falcon, Falco rusticolus, of northern and arctic regions: often used for hunting



(Faleo gyrfalco), a bird of the family Falconidae, order Falconiformes. Body length, 50-60 cm. Male’s weight, up to 1.5 kg; female’s, up to 2 kg. The plumage is gray, or white with gray markings. The gyrfalcon is distributed in Northern Europe, Asia, and North America. It lives on rocky seacoasts and in forest tundra. Gyrfalcon mates stay together for many years. They nest on rocks, steep shores, or high trees. There are three to five brownish eggs with red spots in each clutch, which are incubated mainly by the female for 28-29 days. The young leave the nest at about two months. Gyrfalcons feed mainly on birds that they capture on the wing; more rarely they catch lemmings, voles, and hares. Gyrfalcons were highly prized as hunting birds in falconry. They are scarce everywhere and need to be protected.

References in periodicals archive ?
Two peregrine falcons (falcons 2 and 4) and two gyrfalcons (falcons 10 and 11) were found to be excreting Serratospiculum eggs.
Gyrfalcons plunge at speeds up to 58 meters per second (130 mph), report Vance A.
George Stubbs produced only one, typically realistic, example of a gyrfalcon unhooded on a perch.
34 Raptor territorial pairs Rough-legged Hawk 4 Peregrine Falcon 5 Golden Eagle 1 Gyrfalcon 0 Successful nests (no.
Treatment Then, during evening surgery, I had an unusual patient - a gyrfalcon.
Other changes in cliff-nesting raptor occurrence included a decrease in occupied Gyrfalcon (Falco rusticolus) territories from four in 1977 to one in 1979 and two in 2008, a decrease in Rough-legged Hawk (Buteo lagopus) nests from one in 1979 (none in 1977) to none in 2008, and increases in Golden Eagle (Aquila chrysaetos) nests, from two in 1977 and 1979 to five in 2008.
Crouching at the starting line, Dr Hampel deftly let her 10-year-old Gyrfalcon, Speedy, go.
He is a hybrid white gyrsaker falcon, a breeding that combines the size of the Arctic gyrfalcon with the aggression of the saker.
DISPLAY OF SKILL Mark French from Falconry Days with Teal, a four-year-old hybrid gyrfalcon cross Lanner falcon and Derek Clark with Amber, a Steppe eagle
Unfortunately, the Gyrfalcon - with a wingspan of over 6ft - is also likely to be the loneliest bird in the world as none of his feathered friends joined him on his trip to the Isle of Lewis.
Last year, Eugene volunteers spotted a gyrfalcon, the largest in the falcon family and one rarely seen in Oregon.
The six species discussed are American Kestrel, Merlin, Aplomado Falcon, Prairie Falcon, Peregrine Falcon, and Gyrfalcon, along with an extensive general discussion of falcons from morphology and physiology to their behavior, feeding, nesting, and breeding habits, to their relationship with humans.