Impala antelopes, Lake Manyara National Park, Tanzania

The impala is reddish-brown with white hair inside the ears, over each eye and on the chin, upper throat, underparts and buttocks. A narrow black line runs along the middle of the lower back to the tail, and a vertical black stripe appears on the back of each thigh. Impalas have unique brushlike tufts of black hair that cover a scent gland located just above the heel on each hind leg. Impalas are found at grassland and woodland edges, usually very close by water. The impala's social organization allows it to adapt to prevailing environmental conditions. When food is plentiful, males become territorial, shepherding females about their land. In dry periods, territories are abandoned as herds must travel farther to find food. Large, mixed tranquil herds of females and males form. This photograph was taken when Eliot Elisofon was on assignment for American Broadcasting Company and traveled to Africa from June 1966 to early August 1966.