I have a flock of five speckled sussex hens and one speckled sussex roo. I have hatched chicks from them with no problem up until this week when some non-sussex chicks hatched. Help! I keep my breeds completely seperate from each other so I know there is no cross breeding here. I know the eggs came from the sussex pen because I am the only one who the rooster doesn't attack and I label them as soon as I gather them. Here are the pictures. The yellow and black are the chicks in question. The brown one is one of the sussex that hatched the same day. I am starting to think I have a very talented rooster in a neighboring pen....or a sneaky hen.