My chicks arrived yesterday after a quick (less than 24 hours) journey. All looked bright and energetic and ate and drank well. I think some of them were trying to murder the water nipples lol. Overnight one died, looked like she went to sleep under the heat plate and never woke up. No obvious trauma or symptoms of any kind, and she wasn't squished or trapped. One other is sluggish this morning. They have not encountered the ground since I've had them, and I have no other birds and haven't handled any so I can't imagine I contaminated anything. The brooder is in my garage which is critter-proof. Poops look normal, no obvious anything except lethargy. I got a little NutriDrench into her. I have Corid; should I use it? Anything else I can do? Thanks!

