After my chickens were attacked by neighbors dog, I have this one buff (approx. 8months old) she would still come out of the chicken coop to feed. But on 11/22/10 she came out to feed as usual, but one of my Red-sex link hens jumped on her back like a rooster would, so she ran straight back to the coop for the rest of the day. Then 11/23/10 She never came out of the coop but I would and check on her she was always in a nesting box but she would be in different nesting boxes, so I thought maybe she was out getting something to eat. Well, this morning she was still in the nesting box didn't seem like she was going to come out so I took her out of the box and out of the coop. When I sat her down she just sat there and kind like her beak was chattering as if she was cold, like we do when where cold we chattering our teeth. Then she finally got up and puffed out her feathers and was kind of sqwaking, had a huge poop then went over to eat. She was eating like she has eaten for days. She is very submissive to me when I get near her. She didn't drink anything. then went back into a nesting box again. I am going to go down and take her out again but I was wandering if anyone ever had a chicken do this before. Or if anyone could tell me what could be wrong with her. Do chicken get upset if another chicken gets killed by a predator as if they miss them? I need help on what I need to do or how to figure out what is wrong with her? She don't seem to have any injures that I could see. When I reach in to get her out of the box she is very mean. But when I get her out and hold her and talk to she kinda like purrs. Someone please help me?