Game flapper mixed a woeful gin (6,4)
I believe the answer is:
guinea fowl
'game flapper' is the definition.
(game bird, something which flaps its wings)
'mixed a woeful gin' is the wordplay.
'mixed' indicates anagramming the letters.
'a'+'woeful'+'gin'='awoefulgin'
'awoefulgin' is an anagram of 'GUINEA-FOWL'.
(Other definitions for guinea fowl that I've seen before include "African bird related to the pheasant" , "African game bird" .)