I have a Black Aussie hen, B'elana that likes to hunt me. At least that's what it feels like. She will sneak up on me sometimes and wait for me to start walking and then she either slams into my leg or bites me. Today was the first time she actually bit me hard enough to make a mark and it wasn't until I sat down that she did it. When shes not sneaking she will see me and come running behind me and slam into me but if I stop then she stops immediately and just stairs at me and waits for me to start moving again.If I walk fast then shes more likely to bite. More and more these days I wind up stepping on her feet because shes on me before I know it. Her sister, Nugget, is very sweet and will run after me also but never agressive. She will run fast to get in front of me and then squat to be pet or will sit on my feet if I'm still. If I bend over in the yard, B'elana always runs right over and sizes me up. She bobs the head and studies me before attempting to jump on my back. The times that I let her on my back, she will just sit there all nice and pretty like shes telling everyone that she owns me but she doesnt peck at all when shes up there. Any ideas?