I have a hen who's 1.5 years old and actually GROWLS and attacks!!! She's a Blue JG. Not even the JG roo will approach her. She actually pecked my 4 year old JG today and growled. Yes, I've tried separating her for a few months with another hen. Didn't work. It's not pecking order either. She growls, for heaven's sake!!!! Does anyone else have a vicious hen?