Hi all, New to posting here, but I appreciate all the insight I've gathered from these forums in the past. Now I have a question of my own: Yesterday I received my 26 chicks in the mail, all happy and healthy looking (that would make them 4 days old today). They did fine all day, seemed to find their food and water easily, and looked warm and healthy last night when I went to bed. When I went out this morning, one was lying sprawled on its side near the heat lamp, basically looking dead. But on closer examination it was still breathing, so I picked it up and tried holding it closer to heat lamp, in case it was just cold. Eyes shut, whole body was kind of floppy feeling, little frequent breaths, occasionally it would writhe around a bit then flop back down. After about 20 minutes of that, I tried giving it a little warm water by resting the side of its beak in a spoon, which it immediately drank a sip, put its head back, gulped, writhed a little more, then died. It didn't seem to match any disease description I could find; it was cold out last night (about 40F in the garage where their box is), but I found it the same distance from the heat lamp as the rest of the chicks, so it doesn't seem like a cold issue; they were all vaccinated for Marek's at the hatchery; I'm feeding medicated chick starter for coccidiosis; I think I've done everything the books and forums say to keep them healthy. Do these symptoms sound familiar to anyone? Is it possible the others just trampled it in the night? Super sad to lose a baby, but I accept that these things happen. I would mainly like to know whether I need to do some serious disinfecting and/or monitoring of the rest of the chicks, or anything else I can do to prevent this from happening again. Your input is much appreciated!