I have a second group of chicks. These little guys are not doing so good. every other day I wake up to a dead chick. This is all I have noticed: they have a very smelly medium brown runny poop. I keep clean water every day, clean bedding which is hay (first I tried pine they died in it) I give them antibiotic chick starter feed, I have checked and regulated heat, I just started adding electrolytes, worming and vitamins to water is there anything else I can do and what can be the problem. I have checked their butts they are nice and clean. please help before I loose all of them.