Male bird wrecking garden (6)
I believe the answer is:
gander
'male bird' is the definition.
(male goose)
'wrecking garden' is the wordplay.
'wrecking' is an anagram indicator (I've seen this in other clues).
'garden' with letters rearranged gives 'GANDER'.
(Other definitions for gander that I've seen before include "waterbird" , "'What's sauce for the goose is sauce for the . . . . . .'" , "male member of the Anatidae family" , "Butchers - goose" , "Male goose - quick look" .)