Hi, so I am new to raising baby chicks- but I tried my best to research everything. We were incubating 9 eggs and only one hatched, after inspection only 2 of the other eggs had anything in them. We didn't want this little guy to grow up by himself so I ordered 7 chicks from Meyer's. One was DOA, the others were fine for the first couple of days. I regularly checked the temperature to make sure it was right and they had unlimited access to food and water. One had died on day 3 overnight and then another that next morning, I was worried it was a disease (starts with a C but cant spell it) so I gave them a 5 day treatment of Corid. A couple days later one more died, and they've been dying each one by one about every other day. They'll seem fine one minute and then gone the next. My last two from the shipment have gone today, the only remaining one is the one we hatched ourselves. He was only a few days older than them, shared their space and food and water, and is seemingly unaffected by whatever got the rest of them. Any ideas?