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Range (Arctic regions in America)

Arctic regions; in America, south in winter to the northern United States.

Nest, on cliffs or in trees. Eggs, three to four, not distinguishable from those of the preceding, 2·37 × 1.72.

FALCONS, HAWKS, EAGLES, ETC. 354a. F. r. gyrfalco (Linn.). GYRFALCON. - Head streaked with buffy white and fuscous or black; back varying from brownish gray to slaty fuscous, without complete bars and sometimes entirely unbarred; tail of the same color as the back, with indistinct or incomplete lighter bars; under parts heavily streaked with whitish and fuscous.

Range." Northern Europe and arctic America, from northern Labrador and coasts of Hudson Bay to Alaska"; casually south in winter to R. I. 354b. F. r. obsoletus (Gmel.). BLACK GYRFALCON. - Upper parts uniform slaty fuscous, without bars; tail the same, without or with only broken bars; under parts of the same color as the back; the feathers with partly concealed buffy spots.