I have a silkie chick that is maybe 2 weeks at most. She (maybe)is very tiny, doesnt really mix in with the rest of the flock (one other silkie, a buff orpington, and 3 americauna). She still gets pasty butt, though I've tried the yogurt with chick crumble, and clean her two or three times a day. Her vent is different, too. It points straight down. She eats and drinks but just doesnt seem... Right. Any ideas?