Flaps like wild bats (4)
I believe the answer is:
tabs
'flaps' is the definition.
(I've seen this in another clue)
'wild bats' is the wordplay.
'wild' indicates anagramming the letters.
'bats' with letters rearranged gives 'TABS'.
'like' is the link.
(Other definitions for tabs that I've seen before include "It's curtains" , "Marks in computer document" , "Bills in restaurants" , "that are picked up by footers?" , "medication" .)