Last year we had been given a coop, we bleached and cleaned it good three times. But every bird we've put in there since has gotten sick and died. Their eyes swell up so much that they can't open them. They won't eat or drink & barely move. We've decided to get rid of the coop because we don't want to continue losing birds. But we'd like to know what's killing them. I will upload photos of one of the pullets when I get home.