Am I doing the right thing by starting my chicks on Corid? The other day one of my chicks looked frumpy, tail down, isolating herself and poop a bloody strinky thing in it. The other 3 look just fine. I have two that are 3 weeks old and two that are almost 4 weeks old. I got them from two different places, big difference in their size also. So, after checking all their signs and seeing the one was like this and also is not growing at the rate like the others, I decided to treat all of them for Cocci, just in case. Im a new chick mom, so hope I did the right thing. BTW- their nursery is cleaned everyday, fresh water couple times a day, and change out feed every day. They are in house in a puppy pen w/ ecoglow warmer and heat lamp on the other side, they are not too hot, I have a temperture thingy in their w/ them.