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

by Charles K. Reed

WHITE-TAILED PTARMIGAN.

304. Lagopus leucurus. 13 inches.

Found in the higher ranges of the Rocky Mountains, from Colorado north to Alaska. This species differs from any of the preceding in having at all seasons of the year a white tail; it is also somewhat smaller than the [Rock Ptarmigan]. From six to twelve creamy white eggs; speckled and blotched with chestnut brown (1.70 × 1.15).