>>5011062
Out of curiosity I did this image too. Same basic results. For birds you would have to pluck the animal bald to get accurate results, but these quick estimations are pretty accurate still. The algorithm doesn't have much difficulty because weight balancing is a pretty basic function of our physical universe and the visual balance is typically very close to the actual mass balance. Obviously there are exceptions such as very heavy structures or very light ones, hence the tail feather removal for the birds.