That dude is at least half bird for sure.
Man’s Winning Performance At The European Seagull Screeching Championship

This is a video of 21-year old Dutchman Jarmo Slutter performing his winning seagull imitation at the European Gull Screeching Championship held in Adinkerke, Belgium. Admittedly, he does sound exactly like a bird. The costume certainly doesn’t hurt either. Next year I plan to win the competition with a cleverly hidden recording of a seagull and my lip-synching skills. And if I don’t win I’ll complain the contest is rigged because my performance was actually a real bird I recorded, then get banned from ever competing again, which I probably would have been anyways if they drug test the winner.