The term LARGE AUSSIE BIRD can be solved with the 3 letter word EMU. The EMU is a large flightless bird native to Australia and the second-largest living bird by height, after its ratite relative, the ostrich. It is also the only extant member of the genus Dromaius. The EMU's range covers most of mainland Australia, but the Tasmanian, Kangaroo Island and King Island subspecies became extinct after the European settlement of Australia in 1788.