I have a male alexandrine parrot who is at least a year old. I found a question that is similar to mine here, but I couldn't see the video that was posted so I wanted to make sure. I just got him yesterday and he was nervous at first, but he seems to be fine now, as he is calmly preening his feather. But strangely, he keeps walking on his perch and tilt his head in a somewhat circular motion near the corner of the cage. Is he simply trying to sharpen his beak or is he still nervous?