I recently had two chickens (Black Australope Rooster & Barred Rock Hen) pass away...I noticed a couple days prior to their passing that one of the roosters eyes was not open and looked like it was "stuck" closed. Well now that both of the have died I just noticed today that another one of my Barred Rock Hens has the same problem with her eye! What could the problem be? Does anyone have any ideas or suggestions? This is my first time keeping chickens and I dont want to see all of them die! PLEASE HELP!