The San Diego Wild Animal Park in San Pasqual, California, had three successful African elephant (Loxodonta africana) births in 1982: "Tavi" (female) born 29 January, "Margo" (female) born 24 May and "Tsavo" (male) born 22 June (Lash, 1982). The gestation period for the calves was estimated to be from 21 to 21 3/4 months. By the end of their first year, each calf had grown over one foot in height to approximately 49 inches. Although they eat solid foods, the calves continue to nurse regularly at about 1 hour intervals for a duration of 1½ minutes over the 8-hour period of observation.
Berg, J. K. (1986). Report on the Behavioral Development of Three Captive Born African Elephant Calves. Elephant, 2(2), 39-41. Doi: 10.22237/elephant/1521731995