This is a Wikipedia image of a mute swan attacking a man in Hokkaido, and, aside from also featuring swan-related violence, it has nothing to do with the story.

This is sad news, but it’s too damn strange to keep to myself.

A 37 year-old Chicago-area man was working for a pest control company that specializes in keeping geese away.  He set out in a kayak to handle some geese at a residential apartment complex in local suburb.  While out on the water, a swan charged him.  This caused his kayak to capsize.  After that, the swan kept attacking, preventing the man from getting to shore.  The swan essentially drowned him.

Sounds like something out of The Birds, doesn’t it?

Who, What, Why: How dangerous are swans? – BBC News