Gyrfalcon - Wikipedia
WEBThe gyrfalcon is the largest falcon in the world, being about the same size as the largest buteos but probably slightly heavier. Males are 48 to 61 centimetres (19 to 24 inches) long, weigh 805 to 1,350 grams (1 pound 12 + 1 ⁄ 2 ounces to 2 pounds 15 + 1 ⁄ 2 ounces), with average weights reported as 1,130 or 1,170 g (2 lb 8 oz or 2 lb 9 + 1 ...
Gyrfalcon Identification - All About Birds
WEBGyrfalcons are very large falcons. They have pointed wings, but they are not as pointed or as narrow as the wings of smaller falcons. The tail is relatively long. The body is thick and powerful, particularly in females, which are substantially larger than males.
Gyrfalcon - Facts, Diet, Habitat & Pictures on Animalia.bio
WEBAccording to the IUCN Red List, the total gyrfalcon population size is around 20,000-49,999 mature individuals. The European population is estimated at 1,100-1,900 pairs, which equates to 2,200-3,900 mature individuals.
Gyrfalcon Overview, All About Birds, Cornell Lab of Ornithology
WEBAdult males are much smaller than females: males average less than 3 pounds while females average up to 4 pounds. Both males and females have highly variable plumage coloration, ranging from nearly pure white to dark gray-brown. In North America, most are an intermediate gray color.
Gyrfalcon | Audubon Field Guide
WEBMost Gyrfalcons remain in the far north all year; only a few come as far south as the Canadian border in winter, providing thrills for birders. Variable in color, Gyrs may be blackish, gray, or stunningly white.
Gyrfalcon Fact Sheet – HawkWatch International
WEBSize: L 19-24″ / WS 43-51″. Overview. Gyrfalcon is the largest, most powerful, rarest N.A. falcon and likely the most sought-after raptor by birders. It is a denizen of the Arctic, nesting on cliffs above vast expanses where they hunt large birds (e.g., ptarmigan, waterfowl) and sometimes medium-sized mammals (e.g., Arctic Hare).
Gyrfalcon | Arctic, Predator & Raptor | Britannica
WEBThe gyrfalcon may reach 60 cm (2 feet) in length, and females, which average 1,400–2,100 grams (3.1–4.6 pounds), weigh nearly twice as much as males. The species prefers cliff faces for nesting sites; however, they occasionally use nests abandoned by …
Gyrfalcon - eBird
WEBIdentification. Stocky beast of a falcon; ranges in color from strikingly white to silvery-gray to dark sooty-brown. Relatively long tail and broad wings with powerful flight. Generally darker above and paler below, with markings on the belly ranging from …
Gyrfalcon (Falco rusticolus) - BirdLife species factsheet
WEBPopulation size: 12600-55300 mature individuals. Population trend: stable. Extent of occurrence (breeding/resident): 37,100,000 km 2. Country endemic: no. Attributes. Realm - Nearctic. Realm - Palearctic. IUCN System - Terrestrial. IUCN System - Marine. Raptors MOU. Recommended citation.
Gyrfalcon - BirdWeb
WEBGray adults have gray upperparts with subtle darker mottling, and white underparts mottled with gray. Dark adults are dark-brownish overall above and brown streaked with white below. There is extreme sexual size dimorphism among Gyrfalcons, with males being only about 65% the size of females.
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