1) What type of bird , age and weight. Black Copper Marans, 3 months old, not sure on his weight 2) What is the behavior, exactly. Noticed him limping today, and biting at one of his toes on the foot that he doesn't seem to want to put much weight on, although I examined him twice over and don't see any visible injury. 3) Is there any bleeding, injury, broken bones or other sign of trauma. None I can see. 4) What happened, if anything that you know of, that may have caused the situation. Don't know of any situation that might have caused an injury. He's the biggest bird in the coop, so no one has picked on him. 5) What has the bird been eating and drinking, if at all. Eating and drinking normally as far as I can see. Morning mash, including extra protein, grow rations, corn and other grains. 6) How does the poop look? Normal? Bloody? Runny? etc. There was some running poop in the pen the other day, but I have about 25 young birds in that pen, and can't be certain whose it was. 7) What has been the treatment you have administered so far? Nothing yet. I just noticed the problem today. 8 ) What is your intent as far as treatment? For example, do you want to treat completely yourself, or do you need help in stabilizing the bird til you can get to a vet? I would like to treat him myself if possible. 10) Describe the housing/bedding in use New 10 x 12 coop with 3 big windows for lots of fresh air. Deep pine shavings for bedding. We haven't finished the outdoor run yet, so the young birds haven't been outside at all. The Marans trio has preferred to roost on the ground since we got them two months ago. Okay, I'm terrified after reading so many threads about Marek's and limping birds. I have about sixty young chickens under two months old, and now I'm scared I've introduced a disease to my flock. I had the Marans trio quarantined for over two month before letting them mix with the rest of my birds. Please tell me this isn't necessarily the worst case scenario. What should I do? I'm panicked.