I'm new to chickens and one of my 7wk old Appenzeller Spitzhaubens has twice taken a very long dirt bath/ hang out session in a large potted plant. She seems happy and content while doing this, but both times I had gotten all the other birds back in the coop and ended up picking her up because she was still hanging out and flicking dirt on herself. When I set her down she was wobbly and kind of falling and then limped for maybe 10 seconds, then appeared to be absolutely fine. When this just happened the second time I realized it's not a fluke, but she has no other symptoms of anything. Her skin looks fine, her eyes look fine, etc, etc. I want to act quickly to support the health of the other birds, but I don't really know what I'm looking at or for. Could there be another cause for this behavior? If she's not sick, I'm reluctant to isolate her and stress her. Please tell me what to do!