I bought 10 chicks last week and 2 days after I bought them one died. I figured it was due to stress. When I looked at them again, another one looked sick, too- so I knew it wasn't stress. I called the guy I bought them from (who was certified) and described symptoms and he said it was most likely cocci. I bought corrid and have been giving them that for 2 days. Since then, the one that was sickly has died and another afterwards. But, now I'm not so sure it's cocci. The chicks that act sick (which, of course are separated) are sleepy, huddle together, uninterested in what the others are doing and are not hungry or thirsty. They are smaller and lighter than the others as a result. One has a pasted rear (and actually acts sick), poops watery/bubbly liquid that is mostly clear with some brown/red. The other that has a sortof pasty rear does not act sick and poops normal. On both of these chicks they have white/greenish poo stuck to their rears- which I attempted to wipe off- but is very hard and seems to have killed the feathers around the vent. Their breathing seems to be a bit heavy when sleeping and they all seem a bit bluish- I think I have the temp too high in the brooder and have adjusted since noticing this behavior. One bird shakes her head, but I am unsure if that's cocci or just chick behavior, she poops a liquid red/yellow/brown. I am calling the local vet as soon as I get home from work- but thought I'd get some input from you guys too. Any help would be much appreciated. Thanks.