I'm not sure how your TSC is, but I was just at mine last night looking at their chicks ( a hour before I had just gotten 9 chicks from St, Elmo feed and seed ) and I wasn't pleased with what I was seeing at all, especially comparing TSC to St. Elmo...
The buff orpington bin had a dead chick in...
Me and mom both went in together and bough the chicks from the St. Elmo feed store, altogether we've got 9 and it's one of each breed.. Besides the 3 bantams, and the two ameraucanas.. We know for sure it's not those 5 doing it, it's either the black black australorp or the barred Plymouth rock...