I'm not sure if we've got a problem or not, but I wanted to get some advice in case we do. Our chicken coop/run area is made out of chain link fence and we have a big dog house inside with the front off. My husband bolted a roost post inside and that's where two of my chickens like to roost at night. The other two like to get on the roost post we've got pushed through the chain link on one of the corners. Just this past week, I've noticed that one of the chickens has not been roosting like usual. She usually likes to stay on the post in the corner of the coop, but this past week, my husband and I have seen her lying on the ground beside some of our ducks. He picked her up one night and put her back on the roost post, but she jumped down on the ground again. Other than not roosting at night, she appears to be okay. She's a little more agitated though than usual, as I have seen her chasing down and pecking at one of the other hens and some ducks. It's hard to tell though with the vast amount of ducks we have, just how much she is drinking or eating. I will point out that I'm concerned because a year ago (almost exactly), we noticed all of our chickens doing this (at the time we only had six chickens and two ducks) and we didn't think twice about it. We had just enclosed three sides with a tarp and had put heat lamps in, so we just thought (being our first winter with chickens) that they felt secure and were "sunning" in the heat lamps. On Feb. 11, we lost one of our chickens and were told that she probably had Coccidia. We were advised to treat the whole flock with antibiotic. They had all stopped drinking much and seemed lethargic in addition to not roosting. After treatment, all got back to their normal selves and were roosting again. Does this sound like the same thing coming back this year? Should we isolate her and treat her with antibiotics, treat our whole flock, or am I just freaking out for nothing? I just lost a duck to prolapse not even a week ago so I'm freaking out over every little thing when it comes to my flock right now. Any advice would be helpful. Thanks.