One of the ducks I have adopted/rescued has a spot inside of her pupil. She had had it since we rescued her 3 months ago. She has recovered well and acts just as healthy as all the other ducks.She came from a neglect situation so who knows what she could have picked up. I googled it and all sorts of things came up (blindness, parasites) so I wanted to get an opinion from all of you. What do you think @Miss Lydia @livininbrazil ? Anyone have an opinion on this? I am thinking old age blindness or parasites at some point in her life that damaged her retina. Anyone have a guess on how old this hen is?