I was a little worried about that too, but the perch is a 2 foot diameter pie in the corner, its hard to see in the pic. its not that he hits the wall when he turns around, but when hes eating his tail rubs against the bottom of the perch itself just as if he was on the ground, and then only for the first minute or two after i serve him, and then after he figures out knowbody is taking away his food he stands upright, tail off the edge and eats.