My chicks look almost exactly the same, color, comb, tail feathers, but one is about three times the size as the other. I was afraid the big one was a rooster, but size is the only sign. I can only assume that they were born the same time, they were closer to the same size in the beginning. Is it possible I have two hens? They are my first and I am attached. Guess I just need to know if I need my husband to build a rooster coop.