We have been given 7 birds and were told they were all hens, but recently one has started crowing. The crow doesn't sound quite the same as the usual cockerel crow, but we are unsure as to whether she is a she or a he. He/She has been the dominant bird in the pack, but has just started chasing the girls around and we saw them mount one this morning. We are going by the assumption that the bird is a cockerel now, but are concerned that the girls in our flock are unhappy, as we have seen signs of puffing up their necks and running away from him. Is there anything we can do, other than remove the problem?