photos of an almost entirely white american crow with a genetic mutation known as leucism. leucism is a condition in which less pigmentation is produced than in a typical specimen. it can occur in a small section of the body, in portions of the body, or throughout the entire body like in this bird. leucism can be detrimental to the health of birds, as melanin, which is reduced in these birds, is important to constructing feathers in birds + can lead to reduced vision.
