Brilliant I’ll add this idea to my zoo plan. I’m guessing the orangutans and gibbons are safe together? And small birds flying around won’t cause to much trouble?
Primates might prey on birds and/or their eggs. For larger birds the ropes and climbing structures could be a potentially dangerous obstacle during flight.
I think the mix with birds makes things unnecessarily complicated, and the climbing structures above the sun bears are something that will go well - until it doesn't. However the gibbon, orangutan and tapir mix does seem a reasonable idea to me.