Western Bird Guide: Birds of the Rockies and West to the Pacific

by Charles K. Reed

BALD EAGLE.

352. Haliætus leucocephalus. 34 inches.

In the adult birds, the white head and tail will always identify them, but in the first and second year they are a brownish black, the second year showing traces of the white on head and tail. They are found throughout the United States. Their food consists largely of fish.

GRAY GYRFALCON.

354. Falco rusticolus. 23 inches.

These are birds of the Arctic regions and are rarely taken in the United States even in winter.

Nest.—They build upon the ledges of high cliffs, laying three or four eggs of a buffy color, marked with fine spots and blotches of shades of brown.

PRAIRIE FALCON.

355. Falco mexicanus. 18 inches.