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.
live around the Arctic and range in colour from being almost exclusively white in Greenland to usually black in Labrador in Canada.
New techniques of measurement are revealing how a gyrfalcon
sky dives without ending up as a splat of feathers.
Falcons have dozens of known species including sakers, peregrines, gyrfalcons
, barbary, and hybrids.
23, 2010 /PRNewswire-USNewswire/ -- IFAW (the International Fund for Animal Welfare) announced today that eight endangered gyrfalcons
, rescued from a failed smuggling operation in Moscow last month, were successfully released back to the wild.
Mortality rates during the breeding season are higher in populations of Rock Ptarmigan where mammalian predators and Gyrfalcons
(Falco rusticolus) are a threat (23%, Gardarsson 1988; 14%, Cotter et al.
If severe Arctic weather pushes south, watch for snowy owls and gyrfalcons
in fields near the Eugene Airport and Finley National Wildlife Refuge north of Monroe.
Victims include bald and golden eagles, snowy owls, and gyrfalcons
During years of rodent shortages up north, we can also observe a hunger-driven influx of special raptors, like snowy, great gray, boreal, hawk, and long-eared owls, as well as gyrfalcons
and rough-legged hawks.
In this study, serum protein electrophoresis by using high-resolution agarose gels was performed on blood samples collected from 105 falcons, including peregrine falcons (Falco peregrinus), gyrfalcons
(Falto rusticolus), saker falcons (Falto cherrug), red-naped shaheens (Falco pelegrinoides babylonicus), and hybrid falcons, that were submitted to the Dubai Falcon Hospital (Dubai, United Arab Emirates) between 2003 and 2006.
The birds - called gyrfalcons
- were discovered in two cartons being loaded with luggage into the hold of a plane bound for the Middle East.
and gyr-hybrids with Peregrine and Saker falcons have grown greatly in popularity, not so much because of increased effectiveness in hunting, but because many are phenomenally handsome, especially in the eyes of sheikhs who pay great prices just to have them in their collection.
Will poor rodent populations up north bring us special owls, like great grays, boreals, hawk owls, long-eareds, and saw-whets - or majestic raptors like gyrfalcons
and rough-legged hawks.
Reference hematologic parameters have been published for multiple species of raptors found in North America, including peregrine falcons (Falco peregrinus), (2,7,13) gyrfalcons
(Falco rusticolus), (7,14) sharp-shinned hawks (Accipiter striatus), (1,15) Cooper's hawks (Accipiter cooperii) (COHA), (1,6) bald eagles (Haliaeetus leucocephalus) (BAEA), (9,16-18) golden eagles (Aquila chrysaetos), (17) California condors (Gymnogyps californianus), (5) red-tailed hawks (Buteo jamaicensis) (RTHA), (11,17,19) Harris's hawks (Parabuteo unicinctus), (13,17) Swainson's hawks (Buteo swainsoni), (10) barn owls (Tyto alba), (12,18) and great-horned owls (Bubo virginianus) (GHOW).
1-5) Among raptors, red-tailed hawks (Buteo jamaicensis), rough-legged hawks (Buteo lagopus), golden eagles (Aquila chrysaetos), goshawks (Accipiter gentilis), gyrfalcons
(Falco rusticolus), and snowy owls (Bubo scandiacus) are particularly susceptible.