Soldier with time for flapper (7)

I believe the answer is:

antbird

'flapper' is the definition.
(antbird is a kind of birdanimal)

'soldier with time' is the wordplay.
'soldier' becomes 'ant' (soldier is a type of ant).
'with' is a charade indicator (letters next to each other).
'time' becomes 'bird' (both are slang for a prison sentence).
'ant'+'bird'='ANTBIRD'

'for' is the link.

I've seen this clue in The Independent.

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