This is Friendly Swan, or 'Tara'. I have known  her since he was still fuzzy and browny grey. She seems to have a thing for rubbing her beak against the plastic of the tender and I feed her before she gets chased off by the established couples. She has totally different mannerisms from all the other local swans, very David Byrne circa 'Psycho Killer'... If I can catch her in the act, I'll post a video.