Swan attacks a wakesurfer.

Swan are beautiful birds, but, much like their goose relatives, they can be proper a**holes. This wake surfer learned just that on a Texas lake, when a swan attacks and causes him to fall off his board.

There are a whole host of reasons why swans might aggressive, but they get the worse when they’re protecting their young or foraging for food. Back in 2012, a swan knocked a man off his kayak. When the man tried to swim to shore, the bird appeared to have blocked his path, and the man eventually drowned.

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Nolan Deck is a writer for Unofficial Networks, covering skiing and outdoor adventure. After growing up and skiing in Maine, he moved to the Denver area for college where he continues to live and work...