Shrubs are eaten all year, but are most important in winter when forbs are not readily available. Grasses, though relatively unimportant, are eaten when young and succulent. Other food types vary locally in importance. Recently disturbed ground, such as burned areas, are often good foraging sites because they can provide an abundance of new plant growth. Pronghorn are chiefly diurnal, most active in mornings and evenings, but may be seen moving at any time.
Pronghorn are nomadic with seasonal movements often occurring over large areas.
Movements are often dependent upon the quality and quantity of habitat and vary widely among individuals. Pronghorn tend to winter in large herds, with animals of both sexes feeding and bedding close together. However, in mild winters bucks and does may remain separated. During spring, pregnant does isolate themselves to give birth. Bachelor herds of young, non-territorial bucks are also common.