With my two (BG macaw/af.grey) . with time comes respect beeewtn the two. In the beginning cages were set on different sides of the room. 4 years later they are on the same wall.My african grey won't hesitate to waddle down get back up on the Macaw's cage and eat his food. and my mac puts up with it. On the other hand if my mac gets on the greys cage? i see fluffed feathers and agitation from the grey.They both do that depending on their moods. but i can safely say my grey is the alpha in this house. And my mac is the more tolerant of the two.But they do play off each other now, they are siblings. I wouldn't say pals. but they live happily together, chat together. Squawk together. I even see my macaw trying to talk lately. which is new. I have since put my cockatiel (flew in last year) in another room. He doesn't find either of the two bigger ones funny or interesting. he would rather be alone. Both the larger ones seemed to just ignore him. i guess she needs more time I have to respect that.