My next door neighbour's grandad is currently in hospital not because a swan broke his arm but because a swan attacked him in the park and gouged several chunks out of his arm with its beak. He has some sort of infection that is preventing the skin from healing but they can't find out what it is. They have done lots of tests but they can't identify it. They are currently in the process of getting his blood tested by vets. When I asked my neighbour what his grandad did to annoy it he told me that he was trying to pick the swan up because he thought it was ill. I think he might be some sort of swan nonce but I'm not going to say that to him.