Well. lost two a few weeks ago, one 5 month BO just got weak and died, and a BR that was maybe a gew weeks younger also caught something. Eye was all swollen, and then she would turn the head upside down to see, and didnt eat and wasted away, now my oldest hen a BSL's eye is huge and swollen.. The local breeder said there's a virus being carried by mosquitos that is doing all this. I was told they sting the head area which causes the swelling, but then some virus gets transmitted. Man, I dunno what to do... I put tetracyclene back in the water, but am not sure that's going to do the trick, now all I can do is wait... this sucks. I dont see how I can raise birds if you have to watch out for mosquitos, which I cant really control for. Anyone else going through this? I am in So Cal.