When visiting the Monkeys of Makokou habitats, you’ll notice that our drill monkeys are separated into two groups. Although they would ideally live as a single cohesive family group, the monkeys had other plans….
In order to keep the peace, the drills were separated into two groups based on the hierarchy they naturally developed: a group of one male and female, Bobby and Inge, and a group of three females, Lucy, Achi and Drew.
With the hopes of eventually reuniting the two groups, Zoo staff decided to move Drew from the female group to Bobby’s group back in March. It was successful! Drew went from being the lowest-ranked female in the female group to a higher rank in the male group. Drew can often be spotted grooming Inge or playing around with the juvenile Schmidt’s guenon, Kibali.
Drew and her older group still have a social connection, and they can be heard vocalizing to each other, especially in the mornings. Keepers hope this bond will aid in future reintroductions. Recently, a wall was taken down between the two exhibits. This wall acted as a visual barrier between the two drill groups.
Once the wall was removed, keepers monitored the drills to make sure there weren’t any negative or aggressive behaviors between the two groups now that they could see each other. And to our surprise, the opposite occurred! All four females, although separated by mesh, will sit close to each other and groom, as though they are a single group.
This is a step in the right direction. And although a successful reintroduction is a slow, dynamic process, we are hopeful they will continue to have positive interactions and become a cooperative family group.