I bought some baby silkie bantams at the feed store yesterday. They were under a heat lamp (the same type the store used) and had chick starter/grower and water in chick feeders. They were fine yesterday, and when I checked them today they had all suddenly died. They were still warm from the heat lamp so I know they didn't freeze. Their food and water looked untouched. They were all lying on their backs with their feet stretched out - I thought they were just asleep at first. Anyone know what would cause six chicks to suddenly die?