Here's my case: 8 month americauna/isa brown mix, great layer, always really healthy except for a little diarrhea a few weeks ago. But she's seemed totally fine since. It's been super cold (like everywhere) we've mostly been in low teens, but some nights in negatives. I only have 2 birds in a 4x4 ft coop. Was worried about the cold, got them a heat lamp but then it seemed like they were never sleeping. I should add, they've been free in the backyard all summer, but since the snow, they don't venture out of the coop, or right under it (where their food and water is). So, they've been really "cooped up." And my other girl seems just fine and normal and healthy. But today Ida Brown is just standing there, like she's asleep and her feathers are SUPER puffy. Her rear has a little dried poop on it, like she had a few weeks ago. She's been like that all day, only pecking at food a little bit. She wouldn't even go to bed, she pecked at me (definitly not normal!) and it seemed like she could barely move. She laid her egg on the poop plank this morning which cracked it. That's definitely not normal either. Any ideas? I lost one to a hawk 1 month ago. I'm down to just two. I'd hate to lose another. Thanks so much!