Bird winning the hearts of rakish showbiz elite (4)
I believe the answer is:
kiwi
'bird' is the definition.
(kiwi is a kind of bird)
I cannot understand how the remainder of the clue works.
Can you help me to learn more?
(Other definitions for kiwi that I've seen before include "New Zealander (informal)" , "Rutherford was one" , "apteryx" , "Symbol of New Zealand" , "Chinese gooseberry" .)