My 10 month old Gold Laced Wyandotte is having trouble walking. It's as if she loses her balance, then she lowers down onto the ground to rest and eat. She had trouble jumping up 8 inches to get on top of the raised garden beds when I was watching her today, but the she was able to get up onto the dropping board about 2 feet off the ground this evening. She can't seem to get on the roost, but when I put her there for the night, she stays there. I have noticed this dizziness thing for the last couple days - it isn't getting worse or changing much. She was able to run across the yard today just fine, though. She has a great appetite and is drinking like normal. Here's a video of her this afternoon. What is wrong with her? Thanks in advance.