New Zealand bird (4)
I believe the answer is:
'new zealand bird' is the definition.
(I've seen this before)
This is all the clue.
(Other definitions for kiwi that I've seen before include "Fruit and flightless bird" , "Chinese gooseberry" , "Enzedder; flightless bird" , "Symbol of New Zealand" , "Hairy fruit with green flesh" .)