Deer trapping five birds (5)
I believe the answer is:
doves
'birds' is the definition.
(dove is a kind of bird)
'deer trapping five' is the wordplay.
'deer' becomes 'does' (I've seen this in other clues).
'trapping' is an insertion indicator.
'five' becomes 'V' (Roman numeral).
'does' going around 'v' is 'DOVES'.
(Other definitions for doves that I've seen before include "Pacifists" , "Birds of peace" , "See 14" .)