Yes, Geladas are a very peaceful species of baboon. They're held together with Blue-winged goose (and formerly Yellow-necked francolin) in here. But also with a variety of other species in other zoos, such as Rock hyraxes on multiple occasions
Wow! Thank you - I didn't know that about Geladas! I assumed that they were like the other baboon species and not a species that I would trust with birds.