Well, the two of them are getting along just fine. However, after watching the video, we visited the place Tula came from this evening and there was a big dominant bird who charged at us to keep us at bay, while two other slightly smaller birds kept eating at a safe distance. These two were similar to Tula in size. So, we contacted the owner and will have to wait till next week to find out what can be done. Meantime, Tula has become quite at home, literally. I had the front door open to clean up and Tula stayed put by the kennel - no attempt to dash off outdoors. Such a dear bird - listens attentively when you talk to him (or her) and sometimes replies with small 'gaks'.
btw - love the gang of adorableness in your avatar