I bought 2 black sex-link chicks at the feed store, both black, one with a white dot on it's head. The one with the dot grew into a beautiful barred cockerel, the solid black one a black pullet. The black one has fought from the day we brought them home at 2 weeks of age, she fights with all of the chickens. The cockerel, on the other hand is a pacifist. We have five other chickens (best guess 1 cockerel and 4 hens) all roughly the same age. At 12 weeks the cockerels started crowing, and the next day the hen did too. She now not only out fights the cockerels, she outcrows them too. She also chases all the chickens. I've read about hens crowing when there are no roosters, but that's not the case here. Is this dominant hen behavior? This is our first time raising chickens, and we're very confused! I've included photos of both the sex-link chickens - they're almost 13 weeks old.
Blackbird - hen?
Blackbird and the cockerel TK
Blackbird - hen?
Blackbird and the cockerel TK