And if that doesn't happen directly don't give up.
It toked my girls 9 months to be friends, and in the beginning the tried to kill each other.
But I never gave up, and we where doing things like bathing, trick training, and preening them when they where close.
In the end all that did work, and now 9 month later they are friends and I must pinch my arm every day because I still don't believe it's true.