I have a hen (Rhode Island Red) who is getting more and more aggressive towards me too. She's about 1 year old now, I've had her since she was 5 months old. She isn't aggressive to the other 2 hens or my roo, only to me. She chases me and jumps on my legs as I'm walking away, and she stares at me like she wants to rip my face off. She bites my hands and arms if she gets a chance (unless I'm hand feeding them treats). I have tried the "hold her until she quits squirming" and "hold her upside down" but it only seems to make her angrier at me. What else can I do? I won't cull her and I don't want to make her somebody else's problem either. Oh one last thing, she's also the first one who tries escaping the enclosure to go explore - the others seem to know they aren't supposed to do that but she is a troublemaker... LOL