WHITE GRYFALCON
353. Falco islandus. 23 in.
Adults in perfect plumage, pure white, slightly barred on the back and spotted below with black.
Nest.—Of sticks, lined with grasses and feathers; placed on ledges of cliffs; eggs bulky white, specked with reddish brown, often so thickly that the ground color is obscured (2.30 × 1.80).
Range.—Arctic region, breeding in Northern Greenland, and wintering to the Gulf of St. Lawrence, and casually to northern Maine.