Does anybody know what could cause my Royal Palm Tom turkey to go blind overnight? He was fine yesterday & today I went out to let them out for awhile & he's totally blind. He has had no symptoms of any illness at all. There is no discharge from his eyes & no other signs of anything other than he is totally blind. He's very disoriented today because he can't find his way around & keeps bumping into things. I felt so sorry for him that I put him back into the pen so he wouldn't get lost. I tried to do a search online & came up with nothing helpful. Can anybody help me?