I am new to having chickens. Have only had them since May, started with four Black Jersey Giants and one leghorn roo and have added 19 black sex-links all from my husbands grandfather. They all seemed in perfect health but we had a tremendous heat wave come through Tennessee in late June and had the two biggest hens die within a week of each other. One was a Jersey and one was a black sex-link. I currently have one Jersey presenting with a pasty butt, that I have discovered is just water poo. She has clean eyes, walks with a bit of a balance problem but stays to herself mostly. She keeps her feather ruffled and the last two days has been sitting with her head bowed from time to time. Comb and wattles are red, no coughing or sneezing, but still "looks" for food. I also have a sex-link that i discovered 5 days ago to be hoarse with a sneeze? She seems to have funny breathing she seems fine but today when I fed her it looked like something was in her nose...tissue growth? I have a lot of money invested in these hens and have no vets in town that see chickens? I have read awful things about horrible diseases, but neither of them have "enough" symptoms to identify. I have bought Sulmet to give them but have waited because I know it does not treat everything? I thought maybe coccidiosis at first, but think since there are no hens with red poop that is ruled out. They are all over a year and a half. They all free range from morn till night. I have layer pellets and a scratch mix I feed them in the morn and afternoon. I know they drink stagnate water where they get out of the heat during the day I have seen them do it....I could put them in a coop if needed...I always change water daily clean out coop once a week and think they are going through a molt too. I only get about 5-9 eggs a day out of 20 hens. Seems small to me. One of the hens hatched 6 chicks they are around 6 weeks old I am afraid of them getting sick too. I have 3 gallon water buckets they all share so I know the chicks have been exposed if the 2 hens are sick. HELP I do not know what to do. I know it is a ton of information but know you need to know everything to make the best decision on what to do. Do we need to just destroy all and start again? SO Sad!