Feeding Behavior

Forages by walking on ground, browsing leaves and other plant parts, or picking up items from ground.

Eggs

Usually 7-9, sometimes 6-13. Olive-buff, evenly dotted with brown. Incubation is by female only, 25-27 days. Young: Downy young leave nest shortly after hatching. Young are tended by female, but feed themselves. Able to make short flights at age of 1-2 weeks, but do not reach adult size until much later.

Young

Downy young leave nest shortly after hatching. Young are tended by female, but feed themselves. Able to make short flights at age of 1-2 weeks, but do not reach adult size until much later.

Diet

Mostly sage leaves and buds, also insects. Diet in fall and winter may be almost entirely the leaves and fresh shoots of sagebrush. At other seasons, also eats leaves, flowers, and buds of a wide variety of plants; also some insects in summer (young eat many insects at first). Unlike most grouse, digestive system is not adapted for digesting hard seeds.

Nesting

Traditional display grounds may be used for years. In courtship display, male puffs out white chest, inflates two yellow air sacs, raises and spreads tail, droops wings; head is thrown back on shoulders as air sacs are deflated with loud popping sound. Females visit display ground to mate with one of the males. Oldest and most experienced males compete for positions at center of display ground, and these males are usually chosen by females. Nest site is on ground, under sagebrush or clump of grass. Nest (built by female) is shallow depression, sparsely lined with plant material.