I have about 25 chickens at my friends house.(I'm not allowed to have them at mine ) One of my little Isa hens had one eye to swell shut. I thought she may have just had something in it, so I left it alone. There have been no other symptoms and it hasn't spread to the other chickens, so it isn't contageous. I watched her fairly closely, and other than the entire eye area staying swollen, no changes. She has recently started having this nastly cottage cheese looking pus? in the eye. I squeezed it out on two different occasions (gagging the entire time) I think she may be getting an infection in the eye now. I don't know if she has any sight left in the eye or not. Now I have another chicken that seems to be developing the same thing. They have been in the same pen for several months. Does anyone have any ideas what could have caused this, or what I can do to fix it? It seems wierd, but on both chickens, it is the left eye. Don't know if that has anything to do with anything or not.