My del. youngsters and one NH. chick of the same group at 25 weeks are suddenly putting their tails down, not eating and dying. In three days time. No sneezing, no nothing. Just tails droop and they get very pale in their combs very quick. So far I have lost two and another two look bad. I called my npip man and he says to start on LA 200 and also to put 1 tabs. of bleach to a gal of water. I am going to try that. He did not know off hand what it could be. Last yr, at about this same time of yr. I lost two roosters to this about the same age. Now I'm stumped. Why the first cool spell and why just this group The other hens are fine. They were hatched under older hens and not in an incubator so although I had them on chick feed with the cocci preventative until about a month ago I thought they would be fine. Help I want your ideas. gloria jean