gyrfalcon

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gyrfalcon

the most popular bird for hunting by falconry. A large white to gray bird, very discriminating hunter and kills only while in flight. Called also Falco rusticolus.
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Eight species of raptors were represented and 1 hybrid species: 4 northern goshawks (Accipiter gentilis), 3 hybrid gyr x saker falcons (Falco rusticolus x Falco cherrug), 3 Harris hawks (Parabuteo uncinatus), 2 peregrine falcons (Falco peregrinus), 2 gyr falcons, 1 saker falcon, 1 golden eagle (Aquila chrysaetos), 1 white-tailed sea-eagle (Haliaeetus albicilla), and 1 red-tailed hawk (Buteo jamaicensis).
The plumage colour of the gyr falcon is extremely variable, ranging from nearly pure white to jet black.
1-kg, captive-bred, male gyr falcon (Falco rusticolus) was presented for left leg paresis of 48 hours' duration.
Normal haematological values in gyr falcons (Falco rusticolus).
A Greenland gyr falcon is white to match its Arctic surroundings, delicately marked with black on wings and back with bright yellow talons.
Ask a birdwatcher which bird he would most like to see and you can bet gyr falcon will be high on many lists.
You have personalities among falcons too; the female Gyr Falcons, for instance, are very polite and respond well to their handlers, but the Shaheen Peregrine Falcons tend to get distracted.
For the past three years, the club has been organising an annual competition to choose the most beautiful and biggest falcons raised in captivity, including Lanner, Peregrine and Gyr falcons, with the aim of promoting the use of hybrid birds in falconry.
The more powerful gyr falcons have a different style.
In a report on gyr falcons, May-Grunwald-Giemsa and Rapid Romanowsky stains did not adequately stain eosinophil granules, which appeared as colorless, irregular cytoplasmic vacuoles; however, the granules were appropriately stained with modified Wright-Giemsa stain.