I had this happen with a copper Maran she started being aggressive to me pecking on my feet and legs. I decided I needed to to be the big hen -I grab her and hold her by the legs upside down for a short minute and toss her on her feet. It took a couple of times and she needs an occasional reminder but she is MUCH better now.I have a welsummer/EE mix I hatched in May of this year. She is a mean thing! I have a cockerel in there with her, and 8 other hens. She is aggressive with me. She will follow me close, peck at my legs. She jumps and gets my hands, and the other day, she grabbed onto my pants and held on, thrashing about like as if a puppy grabbed on playing and wouldnt let go. She's lost her little hen mind. Any advice? Thanks!!