I have a Turken that I've noticed the last couple of days has been sitting alot. She can get up and walk around fine but she seems to have to think about walking. She is walking slowly and loses her balance easily. Everything else about her appears normal except for this. No injures on her feet or anywhere else. Since she is mixed in w/the rest I haven't been able to see poop that is just hers. The only poop I have noticed from her was runny. She is eating and drinking fine and doesn't isolate herself from the rest of the flock. Any ideas?