 Both sexes become sexually mature at 10 to 14 months . A seasonal breeder , the time when mating occurs varies geographically . Mating may peak in the rainy season ( August to September ) . When a female enters <unk> ( which lasts for four to six days ) , it seeks the company of males . During courtship , the male will pursue the female , test her urine to check if she is in <unk> and <unk> her rump and flanks . Gestation lasts for six to seven months , following which a single calf is born ; births peak from November to December in southern Africa . The newborn is kept in concealment for nearly a month ; the mother pays regular visits to her calf to <unk> it for nearly half an hour . Males may guard their offspring from predators and keep away other males . <unk> takes place at four to five months . The oribi lives for 8 to 12 years in the wild , and for 12 to 14 years in captivity . 
