I had two three week old silkie porcelain chicks and one just inexplicably died. I came home from dinner to find him dead. All day he had been very lethargic. All day, he would just stand under the heatlamp with its eyes closed and wouldn't move or open them. He opened them only when I picked him up to check him over and he seemed fine. Does anyone know why he died? Thanks. I am very sad and am left with just one chick.