Raptor thus brought up its food (6)
I believe the answer is:
osprey
'raptor' is the definition.
(osprey is a kind of raptor)
I cannot understand how the rest of the clue works.
(Other definitions for osprey that I've seen before include "Fish-eater" , "One flying" , "I grab fish" , "Large fish-eating bird of prey" , "Large bird preying on fish in inland waters" .)