Page:Ornithological biography, or an account of the habits of the birds of the United States of America, vol 2.djvu/594

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358
ICELAND OR JER FALCON.


The lower parts in general are brownish-white, longitudinally patched with dark brown, the central part of each feather being of the latter co- lour. The under wing-coverts are similarly marked, as are the under tail-coverts, which are alternately barred with brown and white.

Length 22^ inches, extent of wings 4 feet 1 inch ; bill 1^*^ along the ridge, 1 1 along the edge ; tarsus 2.

The Female in the same state. Plate CXCVL Fig. 2.

The above description applies in all particulars to the female, only the two middle tail-feathers were spotted like the rest.

Length 2 feet, extent of wings 4 ; bill l/^ along the ridge ; tarsus 2.

It is remarkable that the female, although the heaviest and apparently the strongest bird of the pair, has the alar extent less by an inch than that of the male, which she exceeds in length by 1 1 inches.