Our Black Copper Marans have been having loose orange colored stools. My husband went to the feed store and they sold him some tetracycline powder. I read this morning NOT TO USE ON BIRDS LAYING EGGS FOR HUMAN CONSUMPTION! I am so upset ..can we never eat their eggs again? We also have one young pullet that seems lethargic and keeps her eyes closed. We were worried that if she is sick she might make them all sick so that is why he asked them what to do at the feed store...now I am afraid that we have messed up the whole flock. They were on the medicated water for 1 day. Please help.