I was initially worried, because at first it looked like the parrot had somehow gotten its claw stuck on the phone line. It was sliding up and down the line, leaning out and grabbing the adjacent phone line with its beak, and flipping under to hang downwards on one claw before fluttering back to a vertical position. After a while it became obvious that the kaka wasn't trapped - it was just messing about. It was playing circus high-wire, occasionally balancing with its claws on one wire and its beak on the other, doing loops whilst holding on with one claw, and dangling upside down and waving its tail-feathers around. It seemed to be having a grand old time.
Video: Bandits of the Beech Forest (Documentary, 1996)