Dancing Parrot Foot Pixel Error

When a tamed parrot dances to a music disc, a pixel imperfection can be seen on their left foot. It appears to be a triangular cutout. The error seems to be present in every color of parrot.  It is a very small visual bug that doesn’t effect gameplay, but it bothers me a little. I have attached two closeup images of the bug. I apologize for the poor quality, as I just took pictures of my tv screen. I happened to notice this a while ago and thought I should share. Thanks!