Breeding in A. buselaphus takes place in territories that are defended by single males, preferably in open areas on plateaus or ridges (African Wildlife Foundation). Territorial males sniff the female's genitalia. If she is estrous, the male follows her around with his ears depressed. He will occasionally position himself laterally to the female and attempt to block her way. Once the female stands still, she allows the male to mount her. Copulation is brief but may be repeated several times. Copulation is always interrupted if another male intrudes. The intruder is usually chased away (Kingdon 1989). Reproduction varies seasonally depending on the population or subspecies of Hartebeest involved. Nowak (1997) reports that there are birth peaks from October to November in South Africa, December to February in Ethiopia, and February to March in Nairobi National Park. Gestation is 214-242 days and usually a single calf is born. Females isolate themselves in scrub areas to give birth (Schaller 1972; African Wildlife Foundation). This is markedly different than the birthing habits of their close relative the wildebeest, which give birth in groups on the open plains. Female A. buselaphus then leave their young hidden in the scrub for a few weeks, coming back only to suckle. Young are weaned at four months (Kingdon 1989).
Breeding interval: Female hartebeest bear a single offspring no more than once per year.
Breeding season: Mating season varies in this species, depending on the location of the population.
Range number of offspring: 1 to 1.
Range gestation period: 7.13 to 8.07 months.
Range weaning age: 4 to 8 months.
Average weaning age: 4 months.
Key Reproductive Features: iteroparous ; seasonal breeding ; gonochoric/gonochoristic/dioecious (sexes separate); sexual ; viviparous
Average birth mass: 9050 g.
Average number of offspring: 1.
Average age at sexual or reproductive maturity (female)
Sex: female: 730 days.
Parental Investment: altricial ; post-independence association with parents