I have one hen who is obviously the "leader". She is quite friendly to me but can get very cranky near night. I go to the coop nightly to lock things up, shut the windows, check the water etc and she does not like this. The other hens are fine, is this normal? SHould I just ignore the behaviour. She pecked at my hand quite hard and had I not been wearing my work gloves I think I would have had a problem.