It sounds like it could be an injury, but based on your description (limping with no apparent injury, 3 mos old) it could very well be Marek. Keep an eye on her. If she start's getting better, it's not Marek's. If she keeps deteriorating, it probably is Marek's. Vaccinating at this point would...
I agree with the people who are saying that this is probably some sort of toxin. That is the most likely based on the symptoms you're describing. That said, I would not completely rule out Marek's. Since Marek's hits the nervous system, I personally believe that it could cause convulsions...
You are right! I regret not keeping a better research log so that I could cite my sources--and I understand that the article is less useful without those. I'll certainly try to do better about that in the future, although for this article I think it's too late to salvage.
I agree, it looks more like a chick than a keet, I almost said the same. Although there are some pictures floating around on Google that show "keets" that look very similar to the one pictured above, I have not seen any with a distinctive white line like this one.
Introduction
Hello fellow chicken folk! I'm writing this article after becoming intimately familiar with Marek's in one of my chickens. I've seen a lot of good information floating around this site, but I wanted to consolidate and summarize everything. My goal in this article is to quickly...
In some cases runny poop is a chicken's way of cooling down. Has it been very hot where you are? Usually in this case the poops will look very watery, as opposed to like... liquid brown.
Ugh, it's always so sad to lose a bird! I have lost 3 birds, but somehow my reds always escape. They tend to be the most skittish in my flock, I think that may have helped them escape.