Has Rikki interacted much with other birds, besides your cockatiels? I am wondering if Rosellas are to aggressive to be trusted around smaller birds like budgies? (I am talking about out of the cage, free flight time - I wouldn't imagine caging a Rosella with anything but another Rosella!)
No as far as I know she may not of been around other birds. I feel she was hand tame at some time. We will never know where she escaped or was let out?
I say this as someone may not of been able to deal with her attacking them.
I do know of a couple of Rosellas that are great pets. But the norm seems to be you have to spend time interacting with them or they revert to a wild state.
They may not be good in an aviary with other birds.
My situation is a fairly unique interactive flight.
As far as getting along! There is a bit of push and shove, but it is not one sided Max is the most stroppy of the 5. I even see him chase and land on Henry's back, just the other day. And he will tell Rikki when he is not happy and wants her out of there. Roxy is not phased at all and I have seen her take a leaf off of rikki to chew it. Rikki only seems to dislike some humans.
If I saw any signs of any real trouble Rikki would have to be caged or go back to the rescue. And I do not want that.
I make a point of not having favourites and try to interact with them as a flock.
I have not seen any arguments over food bowl rights, and that blows me away.
I took this picture of them all on the Play Gym at night. Roxy reacted to the pre flash. But the picture shows how close togehter they sometimes sleep at night.
And close up so you can see Rikki.