We have two tiels that have become bonded. We have a third teil who seems to be trying to become a part of the flock with the bonded pair but the bonded pair aren't allowing the third bird in. They play outside of their cages on their play stand and as long as they are all down on the floor of the play area, they seem to be ok, eating together and drinking together fine. It's only when they are all up on the perches together that they get feisty with eachother squawking and beak bumping eachother. What can I do to help them all get along better? Thanks for any help.