"How dangerous are swans?"

Spotted by Graeme at the BBC:

A man has drowned after being attacked by a swan, which knocked him out of his kayak and stopped him swimming to shore. So how dangerous are these graceful white birds?

Anthony Hensley, 37, worked for a company that provided swans to keep geese away from property. On Saturday morning, the married father of two set out in a kayak across a pond at a residential complex in Des Plaines, just outside Chicago, where he was tending the birds.

One of the swans charged his boat, capsizing it, says Cook County Sheriff Tom Dart, whose deputies investigated the death. Mr Hensley tried to swim to shore but eyewitnesses told the sheriff's investigators the swan appeared to have actively blocked him...

I never really liked swans, too big, too aggressive. When you throw bread to ducks, they all swim up and grab a few, but if there's a swan around, they'll scare off the little duckies and try and grab all the bread for themsleves.