I bought a few chicks including two sets of fancy ones(adult), a few poults (3 pairs) and guineas(1 pair). In a week the male fancy chicken died suddenly. After two days the hen started to doze, finally gasp and then died. Then three chicks died the same way (a vet was shown and drug given). I have two more chicks, the poults and guineas left, looking healthy. The vet said 50% of it too may die. If anybody know any cure, please help.