hi I have a little chick who is about 10 days old. all has been fine and the others are fine. Today I find the little thing unable to hold it's head up, doing roly-poly's(!!), can't open eyes much and does not seem to be eating or drinking. very weak and just folds head under itself to sleep and if standing will then just got into a forward roll. seems to stand fine, when it stands. have no idea what is wrong and am desperate!