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Range (Arctic regions casually south)
Arctic regions; casually south in winter to Maine.
Nest, on rocky cliffs. Eggs, three to four, varying from creamy white, spotted or blotched with cinnamon-brown, to uniform pale reddish brown, spotted or blotched with shades of the same color, 2.30 1.85. "The food consists of water-fowl and other birds-largely of various arctic species of Grouse which are captured on the wing. All these northern Falcons were formerly esteemed for hawking, as they still are by the Mongol races; their style of flight is magnificent-much swifter than that of the Peregrine-and both are deadly 'footers' (i. e., tenacious of grip), but they lack spirit and dash" (Saunders). 354. Falco rusticolus Linn. GRAY GYRFALCON. Ad. - Upper parts grayish fuscous, barred and margined with buffy white; tail with numerous bars of the same colors; under parts white, streaked and spotted with blackish; legs and under tail-coverts barred with brownish gray. L., 20.00; W., 15.50; T., 9.50; B. from N., 90.