Here are my Light Sussex little ones. I would like some help guessing the gender at this age. As with other breeds, I know there is only one true way to know. Egg or crow. I noticed today that one of the chicks has more black on its tail feathers than the other two. Is this a sign that it may be a roo? The pictures are a little blurry because my daughter wouldn't stop chasing them. The one that I think is a roo is the top picture. His legs are also a little thicker than the other 2.