I'm very happy to have stumbled across the thread about Nan(do). I have 8 chicks that will be 5 weeks old on Wednesday, and are ready to move outside, except one tiny Buff, who I have named Poopsy. Poopsy has had a pasty butt since the day she came home. I've added probiotics to the water, but hasn't made a difference. She is the first one to the treats, and is super quick, darting in and out around the other girls' legs. She is such an adorable little thing, but after reading Nan's story, I'm worried about bringing her outside with the flock, because I don't think she can regulate her body temp. It has been quite a warm summer here in Vermont, however the nights are occasionally dropping down into the 50's. I've worried about her for several reasons - the first being she is still as small as when she was a day old, she totters from side to side when she runs, it's kind of like a waddle, she seems to have an odd bump on her breast, and she ALWAYS has a pasty butt. I noticed you mentioned this issue with Nan, but it seemed as though it was short-lived. Poopsy is like a chick on crack when I throw down some meal worms, and I introduced chick grit last week. I don't know if I should be doing anything else. They have all been on medicated chick feed from the start, and have vitamin/electrolytes added to water. I have 3 Buffs, 2 BPR, and 3 SLW. They do not seem to pick on her at all, and she is quite bold. I have wondered if she's a roo, or if she's a bantam. Any thoughts? Advice? I'm a newbie, so I appreciate any suggestions!