Columbia, SC (WLTX) - The Riverbanks Zoo says one of their gorillas is now an expectant mom, the first time in the zoo's history that one of its gorillas will give birth and raise a child at the park.

The zoo announced Tuesday that Macy, one of the zoo's western lowland gorillas, is pregnant. The zoo says her baby is due in late May.

The pregnancy is the first for Macy as well. She's believed to be about 13 to 14 weeks along. The father is Cenzoo, a 20-year-old gorilla.

"Macy is in good health, and her pregnancy appears to be progressing well," said John Davis, curator of mammals at Riverbanks Zoo and Garden. "First-time gorilla mothers are, however, more likely to experience challenges related to birth and child-rearing, so we are cautiously optimistic moving forward."

Cenzoo has fathered a gorilla before, back in 2005 when he was at a Tampa zoo.

Macy, Cenzoo, and two other female gorillas were brought to the zoo in 2015 as part of the Gorilla Species Survival Plan.