Most of my mix age, breed, species have come down with it, and I lost a year old rooster that had both eyes swollen shut. Most of the chickens just have one puffy eye, foul clear running nose, that cakes up, like our common colds, but smells bad. None of my older birds have it, just the ones that are a year old and down. The turkeys, geese, ducks, and the guineas are not infected by it, but my 6- 1 1/2 months old peachicks have it too, and I do not want to lose them. I have been keeping their eyes open when they go to roost with a chicken hen. What kind of treatment can I give them, if they are treatable. I free range them, and are fed mash, and the chicks are fed meditated chick starter. I am going to a swap in 2 weeks to the sell the extra ducks, and chickens that I don't want, but I do not to sell them sick, but healthy. Thanks for any help on this.