Has anyone had something like a cataract or a cloudy eyed hen? My first batch of chickens a year ago had a blind RIR within a few months. Now all of my RIR's are blind in at least one eye. The others bought at the same time (black stars and Arucaunas) haven't had blindness. Now, I have blind Anconas in the chicks I got in October (the buffs, Wyandetts and Aracaunas in that bathc have fine eyesight). Any ideas?