Hi, I bought 2 chicks at a day old. They were both born June 21, so are just 4 months old now. They are both supposed to be girl Americanas. They were the same size as chicks. They both have "puffy" feather cheeks. The gray one is huge- so much bigger than the little brown one. It also has longer tail feathers - sort of Japanese looking. It is also aggressive and will sometimes peck my arm or sort of flap at me. However, it has no large comb or wattle. It has not tried to mate with the other hens ( I have 2 a year old, too). It has never crowed or made any loud noises. Can you tell me for sure if it is a hen because my neighbor won't tolerate a crowing rooster and I would want to find it a new home if it is a rooster. Or is it just a huge hen?? Or, is my little brown one a runt/bantam? It is so much smaller. Thanks for any advice!!