Birdo, self-nicknamed Birdetta and Birdie, is a recurring character in the HTFA series. In fact, there have been multiple characters known as "Birdo," similar to the multiple Yoshis that have appeared throughout history. The first appearance of Birdo is in HTF Adventures 5, where she appears as a boss character in many levels, serving the evil villain Wart as he enslaves all of the creatures of Subcon. In her standard pink form, Birdo spits eggs.