Outback bird (3)
I believe the answer is:
emu
'outback bird' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for emu that I've seen before include "Aussie bird" , "Large Australian flightless bird" , "it'll never fly!" , "that doesn't get off the ground" , "Hull's character" .)