i have 4 hens and one rooster. two of my hens are broody and have been sitting on eggs in the laying boxes of my coop for almost 2 and half weeks now, (the eggs are due to hatch thursday) and today i noticed one of the broodies was acting very, very strange. she came out of the coop for the first time in two days (as far as i'm aware) and she stood at the gate. she stood there for hours and when i came home she was all puffed out and asleep on the ground. she was very, very weak so we brought her over to her water and she drank a little water but didnt eat. she was very weak so we put her back into the laying box but it wasnt looking good. she died a couple of hours ago and i cant figure out why. her symptoms seem to match the symptoms of coccidiosis (according to several websites). i'm really worried that the other hens and the rooster will get coccidiosis, nut even more worried about the chicks which will hatch soon. can i use heavily dilued bleach to sterilise the whole coop to prevent it spreading? if not what do i do?? please help.. i'm desperate.. also, is it definitely coccidiosis?? how do i prevent the chicks and other hens from getting it?? (sorry to ramble on but i needed to give as much information as possible)..