The African ostrich is the world's tallest living bird; where does the second tallest, the emu, come from?
Emu:  It is endemic to Australia where it is the largest native bird and the only extant member of the genus "Dromaius". Common ostrich: The ostrich or common ostrich ("Struthio camelus") is either one or two species of large flightless birds native to Africa, the only living member(s) of the genus "Struthio", which is in the ratite family.
Australia