Reportedly goes after certain birds (6)
I believe the answer is:
storks
'birds' is the definition.
(stork is a kind of bird)
I can't explain the rest of the clue.
Can you help me to learn more?
(Other definitions for storks that I've seen before include "Wading birds that bring babies" , "Wading birds with large bills" , "Baby carriers!" , "Long-legged baby-carrying birds" , "Black and white wading birds" .)