We recently acquired 2 budgies (named Emy and Karin) from a shelter. They have been with us, in quarantine, for about a week now. We were told that Emy was violent to Karin but we believe some feeding behavior was being mis-read; these birds get very depressed when separated, and are very affectionate when together.
Now I know these birds are currently under a great deal of stress, but Emy is literally doing acrobatics in the cage; just today she's taken to putting one leg up over her wing, behind her own head, and just hanging onto the side of the cage. In this position, she will even allow herself to be touched as long as you're not trying to move her. She'll also do complete flips while clinging to the side of the cage. Any thoughts on how to read this behavior?
Oh yes, budgies can be little energetic and playful critters when it comes to acrobatics! One budgie I had at some point used to swing herself upside-down on the perch for the fun of it, or to get my attention.