I bred my Silver-grey Dorking Hen with my Red/Brown EE Rooster and ended up with 2 chicks that looked totally different leaving me to believe that one was a hen and the other a rooster. So I am posting pics to see if you experienced chicken keepers have any clue. This is them at a few days old. As you can see on had darker and more pronounced markings than the other. What I believe to be the female on the left, male on the right. 4 weeks old. His comb is already changing colors and he is noticeably bigger than her. Female at 16 weeks old Male at 16 weeks old and already been crowing for awhile. Female at 7 1/2 months old, still has yet to lay but has not crowed either. Male at 7 months old.