A few weeks ago I lost a chicken possibly due to heat. One day she was fine, then the next she was weak, had a hard time breathing, and I babied her a lot. The other chickens had attacked her and I had to bandage her little head up and took good care of her. She had been healing up well and I had kept her separate from the rest of the flock, until about 3 days later she could no longer walk and wouldn't eat or drink. So now....I have another Buff Orp who was breathing hard yesterday, but I took her out of the coop and held her for a bit, and when I put her back out in the run, she drank a lot and then the other chickens began to bully her and she went back into the coop. Overnight she stayed/slept right in the nesting box (I went out there late at night before I headed to bed to check on her, and that's where she still was.) This morning when I went out there, she was still in the nesting box, so I left her after I was sure she was ok. Here's the thing....I noticed last night that the other chickens were all ganging up on her, just like they did my other chicken who passed away. She ends up making this trilling noise and puffing her feathers up almost as if to make herself look and sound bigger and badder to keep them away. But everytime, they end up chasing her back into the coop, after getting a peck or 2 in at her. Then when I go in to check on her, she makes this horrible high pitched screeching sound almost like she wants me to stay away too. I'm so confused! Does this mean that my chicken is sick and going to die, or is this just a phase maybe because she's a little under the weather due to the heat, or????? I just don't know what else to do for her. Can anyone help me out?