One of my 6 week old girls has somehow hurt her foot or leg. I have checked her over very carefully, and I cannot find any visible injury. She is limping, and standing on one foot quite a bit. She will lift the bad leg, stretch it out in front of her, flex her foot then set it back down. It has been this way for two days. I wonder if I should confine her in a dog crate with food and water, to keep her off of it, or if I should give her another day or two to see if it improves on it's own. She is eating and drinking, and interacting with the other three chicks normally. She does rest more often and for longer than the others, but otherwise seems fine. Any advice will be very welcome. Thanks.