One of my Australorps used to be the VERY bossy boss. I think the other chickens got sick of her bossy ways, because I caught her lying in the dirt the other day letting my barred Plymouth Rock 'Matilda' jump all over her and pick at her feathers. That afternoon Matilda decided SHE was boss, and she has been ever since. She used to be a fairly calm, tame chicken, but now she is the first to leap out of the coop in the morning, the noisest, and she runs around sqwaking at the slightest provocation and treats me like I'm some kind of monster....... If she keeps up the bad, noisy behaviour, she might just be renamed sunday roast!