Come next spring, the Dallas Zoo expects to more than double its herd of elephants, thanks to a partnership with two other U.S. zoos and a small African nation.

Eighteen elephants from Swaziland will find new homes at the Dallas Zoo, the Sedgwick County Zoo in Wichita, Kan., and the Henry Doorly Zoo in Omaha, Neb.

“The elephants will come from two Swaziland parks, where an overpopulation of elephants has stripped the already drought-ridden parks, depriving other species, like endangered rhinos, of food.”