Well, I had guinea pigs and a parrotlet living in the same room! They were fine, and totally didn't care about each other. Except sometimes the bird would fly over and perch on the cage. The guinea pigs actually liked her though, and they had this cage with really tall sides but no roof. So, when I went away, and a family member was taking care of them, she would actually crawl into
their cage whenever she was let out of
her cage, and she would go eat breakfast (fresh veggies) with them! She would also kiss them on the nose....Super sweet, but probably a terrible, unsafe, and/or unhealthy idea! But again, I wasn't there, so I didn't find out about this until I got back!
Bunnies in the bird room should be fine, but I just want to warn you about two things:
1. The bunnies might be scared of the noise from any shrieking parrots you might have (or maybe they are accustomed to it - I don't know, but you might want to think about it)
2. People will sometimes put bunnies/guinea pigs into their aviaries to stop their birds from breeding. I think the birds think that the animals are a bit of a threat, so they don't think it is safe to breed. if you a breeding your birds/currently have baby birds I wouldn't recommend it.
Apart from that though, you should be fine!
