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Welcome to one of the most contraversial topic in Nintendo history. In the first game Birdo appeared in (Super Mario Bros. 2/Doki-Doki Mario) The instructions noted that Birdo was a guy who thought he was a girl and dressed up as such. Supposedly, he also liked to be called "Birdetta". There is contraversy however, as there were multiple Birdos in that game. As of recent appearances, It is now widely believed that Birdo is a girl. It appears that Nintendo wishes to change Birdo's gender such as how they changed the koopalings relation to bowser. In short, Believe what you want. Sheikah warrior (talk) 20:15, October 19, 2012 (UTC)