Haliaeetus
Well-Known Member
I think to Mangabeys or Cercopithecus species, they are calm and they can easily climb if disturbed.Potentially a primate species. I am not sure though, so confirmation from someone else would be greatly appreciated.
A passage towards an area where they will be the only ones to go could be useful.
I can also imagine some bird species (touracos, glossy starlings...) and even antelopes as Sitatunga or Blue Duiker if the enclosure is large enough and provides rest spaces for them.