9 week old RI Red (might be my rooster - still can't tell) is stumbling around and can't walk straight. Seems to have gotten worse in the last hour and can't even sit without falling over. Hasn't pooped since we've brought it in the house, so I don't know what that look like. All 13 of its coopmates are acting fine. They are eating chick grower, they have grit, my husband gives them a handful of cracked corn most days as a treat, and they get scraps ever so often. Over the weekend some of them got into the (non-fiberglass) insulation. Could this be our problem??? What do I do??? Thought I'd start boiling an egg and cooking some oatmeal for the special diet I saw on here (although I don't have any yogurt). Thanks in advance!