I have four that I'm unsure of. The first white one is around 16 weeks, and the same day I groaned when I saw what look like pointed saddle feathers I also found a blue egg in the nesting boxes. I have NO other colored egglayers in that pen at point of lay, so I'm really confused. The other three are around 12-14 weeks old. I appreciate any help you can give me! If they're boys they're getting caponized soon.