Well you need to seperate them for awhile [to make sure theres no illnesses] Then I would have them in the same room.[let them get used to each other].Start with a schedule for her out of the cage time you can realisticly do.Focas on getting her out of the cage and make a HUGE deal about putting her back with a treat

.All the while giving your other Macaw TONS of attention so he doesnt get upset.I would have boundries established and her routine before I put them togther on a playstand and be right there.My Macaw is very easygoing and their smart animals .The training made a huge difference in what we can do with her.Dont get me wrong their buggers I had to teach her not to eat the blinds.

You never know they might like each other the might not but they will love the companionship
