Columbia's Riverbanks Zoo will welcome a new addition this spring.
The zoo announced this week that Macy, a 10-year-old western lowland gorilla, is expecting. She's due in May, and this is her first pregnancy. Her offspring will be the first gorilla born at Riverbanks.
Zoo officials recognize that first-time gorilla mothers face many risks in pregnancy and childbirth but are "cautiously optimistic" about the pregnancy.
Macy has been at Riverbanks since 2015.