On September 12, 1999, one of the zoo's female African elephants, Moja, successfully gave birth to a female calf, later named Victoria. This was a major feat for the zoo, because Victoria was the first African elephant to be born and survive in North America since 1982. Also, she was the first to be born to a captive-born mother. A second calf, a male named Callee, was born to another female named Savannah almost exactly one year later on September 19, 2000. The father of both of these calves is a bull named Jackson, who is currently the only male African breeding naturally in North America. Both Moja and Savannah became pregnant again in 2006. On July 9, 2008 Savannah gave birth to a female calf named Angelina. Moja gave birth to a female as well on July 25, 2008. This calf has been named Zuri.