I introduced a new chick to my flock of babies about a week ago. She seemed healthy and wasn't showing any signs of illness before I placed her in with the others. But days after she was introduced all my babies got sick. (there are 4) All with in 2 weeks of age to one another. They have pasty buts Their eyes are crusty, and sometimes stuck shut They have discharge coming out of there noses. They had been on medicated feed for about a week after I got them.(I have had them for almost 3 weeks now) Then I gradually switched them to non medicated start and grow. They had been out side on shavings, in a non drafty shed with a heat lamp, now they are inside so I can keep a closer eye on them. They are kept dry, I had to wash one's vent area off, but I towel dried her and cuddled her until she was entirely dry. So far I have added electrolytes and vitamins to there water. And I use a q tip with warm water, and gently rub there eyes with it when they are stuck shut, so they can open them and see to eat. They seem to be eating and drinking just fine. But I am not sure what else I can do for them. Do you guys have any advice on how to treat/what products are safe for young birds ect? Any advice would be greatly appreciated. Also, I just had a respiratory issue with one of my older birds. (Pulled her threw it) Im not sure if this is related or not. I am just having a heck of a time right now with my flock I have vet rx on hand but I am not sure if this is safe to treat young birds with. Do you guys have any experience using this product with babies?