Is birdo male or female?

[Words Of Wisdom]

Kasz216 said:

superchunk said:
I think originally birdo was male, i.e. in SMB2 birdo was pink but had no bow or rings or pretty eyes. However, as time went on birdo's got mistaken internally as a girl, due to being pink, and someone at Nintendo drew birdo more girly and basically is the first game character to receive a sex change.

 Well even in SMB2 the instruction booklet describes him as "A guy that thinks he's a girl" that shoots the eggs out of his mouth to prove it.

Yep.  Kasz got it.