Report of Aussie native’s ploy (4)
I believe the answer is:
ruse
'ploy' is the definition.
(I've seen this before)
'report of aussie native's' is the wordplay.
'report of' shows a homophone (sound like) (how it'd sound if reported).
'aussie native's' becomes 'roo's' (short for kangaroo).
'roos' sounds like 'RUSE'.
(Other definitions for ruse that I've seen before include "Trick, stratagem" , "trick played" , "Artful ploy" , "Sure to be a trick" , "Deceptive device" .)