All my hens have been nice until a day ago. I walked in the coop with flip flops on and one of my Americana hens ran up and bit me. When I reached ot toward her she bit me again. She also makes weird sounds when i'm around. She's still acting like this today. I believe she's low in the pecking order and I have a rooster. None of my other hens are acting like this. My hens have just started laying. I haven't ever been mean to her. Does anyone know why she would start acting like this and how to stop this behavior?