My chicks are now 5 days old and all are doing great. I have one though that has a little bit of a dirty bum. I made sure that when they arrived none of them had occluded bums and have checked them every day. However, this little guy has some hanging off of him (still not occluding) and I'm not sure if I should clean it or leave it alone. I have tried to use a warm, wet paper towel, but it is really stuck and I don't want to hurt the little guy. Any advice? On another interesting note, he little bum seems a little swollen and he is much larger than the rest of the chicks. Is it possible we accidentally got a roo or is it too early to tell from just his size? Have a wonderful day!