A pregnant female will leave the herd to give birth to a single offspring. She will leave the newborn lying hidden for 4–5 weeks while coming back only to nurse it, which is the longest amount of time for any antelope species. Then the calf will start meeting its mother for short periods. At 3 or 4 months, the calf will be with its mother constantly, and at about six months they will permanently join the group.Calves grow very quickly and at six months are fairly independent of their mothers.