I rescued a pigeon about two months ago. It is now about three months old and fully recovered, but now only has one eye.It has spent every day for the past two months on our balcony in a large cage surrounded by its family. I let it out of the cage four days ago and the other birds accepted it and it went off flying with them, but came back at night to its cage. The next day I let it out again, but things were different. Now the flock doesn't seem to accept it and it is alone. I'm not sure what to do. Can anyone help?