The male bird, known as Aragorn, this weekend attacked Dian Edmondson while she was kayaking.
The attack was so fierce she had to fend it off with a paddle.
She says she was told of other attacks on the same day.
When she first passed by the swan to say hello "he had his head down, tucked under his wings and I just thought he was being shy".
But later, as she passed a bridge, she heard a yell: "hey, he's going to get you" - and then the feathers began to fly.
"He actually physically got out of the water on top of my kayak, at the back. He had his wings stretched out ... attacking my kayak with his beak. All I know is my boat's shaking ... and I was screaming and carrying on."
I'm sorry - Aragorn?
On second thoughts, maybe we should let The Hobbit go overseas until we have a firmer grip on reality.
EDIT: Just saw that the swan made the front page of the print edition. Well done, big guy.