Hi yesterday and again this morning there was blood in the coop on the wood chips. Some of it was mixed with some poop. Should I use Corid or equivalent to treat for coccidiosis? I have three chicks - 2 are 3 months old and another two months old. First time chicken raiser so I'm unsure how to handle. They are not eating medicated crumble. They are not acting sick and are eating and drinking normally.