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Page:Ornithological biography, or an account of the habits of the birds of the United States of America, volume 1.djvu/118

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GREAT-FOOTED HAWK.

curved inwards, broad, obtuse, with an acumen. Tail-feathers broadish, rounded, the tail rather long, and nearly even.

Bill blackish-blue at the tip, pale green at the base, cere oil-green; bare orbital space orange. Iris hazel. Feet lemon-yellow; claws brownish-black. Head and hind neck greyish-black, tinged with blue; the rest of the upper parts dark bluish-grey, indistinctly barred with deep brown. Quills blackish-brown, the inner webs marked with transverse elliptical spots of reddish-white. Tail greyish-brown, marked with about twelve bars, the last of which is broad, the rest diminishing in size and intensity of tint. Throat and fore-neck white; a broad band of blackish-blue from the angle of the mouth downwards; cheeks whitish-grey; sides, breast and thighs reddish-white, transversely marked with dark brown spots in longitudinal series. Under wing feathers whitish, transversely barred.

Length 16½ inches, extent of wings 30; bill 1⅛ along the ridge; tarsus 1⅞, middle toe 2½.

The figure represents a male in full vigour. When the bird gets older, the colours of the upper parts acquire a lighter tint in the male, and sometimes the back is ash-grey; but in the female, they gradually assume a deeper hue.


Adult Female. Plate XVI. Fig. 2.

The colour of the upper parts is more brown; tips of the secondary quills more or less whitish, tail tipped with brownish-white; throat and fore neck yellowish-white; the latter longitudinally marked with guttiform spots; general colour beneath yellowish-white, marked with longitudinal broad spots. Vent-feathers reddish; under tail-coverts marked with narrow bars.

Length 19½ inches, extent of wings 36; beak 1½ along the ridge; tarsus 2, middle toe 3½.