I have an 8 week old chick that has been perfectly normal and fine up until this morning. When I went to check on them this one chick was laying in the coop and wouldn't get up. She is bright eyed and not doing anything to make me think she's in pain but she can' stand at all (and yes, until today there was no evidence of leg problems.) I brought her to food and water and she ate/drank fine. She's keeping her legs tucked under her but I lifted her up and saw no signs of broken legs or curled up toes. She even seemed to be moving her legs fine, she just can't stand on them. Any ideas?