Well she died in the night. The day before she had a very pale comb and wattles, and hardly wanted to walk about at all. I still don't know what it is. I hope my other chickens don't get sick and die too.
Thanks for the advice! She seemed to be much better yesterday; perked up and looking for food. She was limping badly though. I washed and inspected both feet thoroughly and there seems to be a little scuff mark but no swelling or anything. All joints moved readily and she didn't complain about...
1) She is a 10 month old Columbian Rock
2) Symptoms on first day: Tired, listless, floppy comb, less interested in food or anything else, minor clear nasal discharge. Tail held downward instead of upright.
Symptoms on Second day (today): Even more unmotivated to do anything. Lays down in...