ive 10 hens not all of them are having problems but a few are having diahrea with a little bit of blood in them.they dont have anyother symptoms and are very active. im planning on worming them this evening,but tring to decide of i need to treat for coccidiousis. they are approximatly 8 months old.and im getting up to 8 eggs a day. thier bedding did get very dirty last week cause we got a good bit of rain, i cleaned it as soon as i could when the rain stopped it was right after that i noticed the diarhea. thanks for any help!