A hawk with feathers extending down its legs, moving between the Arctic and open lands farther south with the seasons.
Feathers cover the legs down to the feet. The plumage occurs in both light and dark forms.
On Arctic tundra, it hunts lemmings and other small animals. In winter it moves south to search for rodents, sometimes hovering into the wind to spot prey below.
An extinction-risk assessment has not been added yet.