A couple of weeks ago, I noticed that my little BR pullet was limping on her right foot. I kept an eye on her and somehow she got better, and was putting weight on hit, and eventually walking like normal. Well, I went into the coop tonight and she was laying on her side, unable to get up. Her legs were trembling, like a tremor. She never let me get close enough to pick her up before, but now she had to. I picked her up and she is just skin and bones. I grabbed some food to hand feed her and she just about inhaled it. So, I put her in a animal carrier to care for her and went online to see what it could possibly be. The two that I found matching symptoms for is Mareks and botulism. As far as botulism, they have not fed off of anything that could give them this, so it must be Mareks, right? I was just a little confused that she had problems a couple of weeks ago and now it has come back. Doesn't Mareks come fast and end fast? Also, just to mention, they have been exposed to mold in their coop, would that cause this? I recently got these chickens and had no where to put them, so we put them in an older coop, old but stable. I just found mold in the nesting boxes and on the wall, so I will have to move all of them asap and find alternate housing, somehow. Any thoughts would be good, I looked at the previous posts and found a little, but the tremors had me thinking it is something else. Thanks!!!