Hi all, I found this little guy after he had flown into our window and was a bit stunned but he came too ok and super friendly. I have not been able to find the owner so would like to keep him. I am new at this and not sure how to tell if he is young, sick etc etc. He is missing feathers as per attached pic near his wing and also under his wings. A work colleague suggested he was young and did not have all his feathers as yet but I am not sure. Would be super happy if someone can give me some advise, I'd hate him to be ill