I have a mail and female in a pond were I live. At the moment the female is in here nest all the time as i am sure she is sitting on eggs. I feed them most days and when the mail sees me he will come over to me and i hand feed him.I have watched and noticed he does not get out of the water when other people feed him. My question is can swans become friendly with humans and can they tell people apart from who they know to feed them regular.