I have three speckled sussex chicks that are four weeks old. One has always been bigger in size and comb. They are supposed to all be hens but there is always a chance of a roo. What sex do you think this chick is (in the middle of the second photo)?
I've heard the SS get pretty big combs early on. I have two SS mixes and so far their combs are still small, so I don't have a lot of experience in that area. As long as the combs stay yellow, I'd say they are ladies.