I swear this batch of babies is going to be the death of me! This chick is 4 weeks old, and is a dwarf compared to the others. 2 days ago I noticed she had pasty butt again. And her bottom is swollen. I've been keeping it cleaned but I'm worried about what is causing all that swelling. Let me give you a run down of the last 4 weeks: Received them late from post office and lost 12 the first 3 days. They ended up with cocci somehow and yes they were vaccinated. Moved the remaining 25 chicks into a 4x8 pen with everything being kept clean and given Corid. They received Corid for 3 days, and my sickest one received it for 4. (Yes I now know it should of been 5 days) After the Corid they got greek yogurt and scrambled eggs. They got sick again and are now getting sulfadimethoxime and yesterday was their first dose. I feed them Texas Naturals chick starter, non soy, non gmo They have 2 lights and I check and clean their food and water containers constantly.