Posted by Gigi Allianic, Communications Nadiri, a 24 year old western lowland gorilla, is expecting her second baby—a younger sibling for Yola. Photo: Dennis Dow/Woodland Park Zoo Oh baby... we have some exciting news to share! Nadiri, the mom of little Yola, is eating for two once again! We are announcing today that Nadiri has safely completed the first trimester of pregnancy and is expecting her second baby in late January or February 2021. The gestation period for gorillas is eight to nine months, similar to humans. The new baby sister or brother for Yola, who turns 5 in November, will be the first offspring between 24-year-old Nadiri and 20-year-old Kwame. Kwame is also the father of Kitoko, a boy born earlier this year to female Uzumma, so Nadiri's new baby will be a younger sibling for him too! Kwame is the silverback of this gorilla family and the father of Nadiri's baby. This will be the second child for each of them at Woodland Park Zoo, and the first for them together