I have one chicken that I found dead last night with a crusted eye and nostrils. Unfortunately, I usually refill feed/water at night when they are all roosted, so I did not notice this issue until one was dead. After examining a l of the other chickens, I found 7 other chickens in a flock of 30 that were exhibiting symtoms. Some are gasping for breath and wheezing and have crusted eyes and watery nostrils. A few are just sneezing. I did some research and think that they might have corzya. I will be going out later to get some antibiotics and possibly Vetrx if I can find it. I just finished cleaning out the chicken coop, as well, and have seperated the sick chickens. Is there anything else I can do? Is this a very deadly disease? Will they all die? Thanks for any help or advice.