I had 14 chicks hatch tuesday- wednesday (day 22-23). I have a Brinsea oct 20 advanced and picked up the eggs from a man that hatches 100 chicks a week. The chicks seemed healthy and strong. I have them in a brooder in my kitchen with lamp and paper towels for bedding. Yesterday morning I put in feed and water (both which had been cleaned before hand) I sprinkled starter (purina med) on the floor. All were pecking at it and acting normal until 1:30 yesterday when 1 started chirping very loudly. I went to check on it and it started flopping around chirping and within minutes it was dead! this happen one after the other with 8 chicks dying within 1 1/2 hours. The other six seem to be fine so far. The feed is the same feed I am feeding to my 3 1/2 wk old chicks. I added save a chick to the water last night but other than that I have changed nothing. I did not spray anything in the air or use any chemicals. Cannot understand how chicks acting fine one minute could be dead a few minutes later. Horrible to watch This is the first chicks we have hatched and I am new to raising chicks. I have read everything that I can find and nothing explains something like this. I called the man where I got the eggs (and other chicks) and he said he has never heard of anything like this. Any ideas what could have caused such a mass sudden death of normal acting chicks??