I have 3 girls, 1 Rhode Island Red and 2 Araucana. I got them when they were little and recently the Rhode Island Red has become quite aggressive, she has been pecking feathers from the younger Araucana and has created a bald spot right under her "chin." She has also started pecking at my feet and when I reach down to pick something up near her she pecks at my hands. I am not sure how to handle her or why she has become so aggressive. I had had them since June and she has never shown aggression before now. It is getting cold where I live and they are spending more time in the coop but they free range all day. I've read that boredom and mites are sometimes to blame, could they be bored? I've tried to give them lettuce recently and they ignored it-not sure what I am doing wrong. any thoughts would be appreciated.