Bird with green vegetable, reportedly unpleasant (7)
I believe the answer is:
peafowl
'bird' is the definition.
(peafowl is a kind of bird)
'with green vegetable reportedly unpleasant' is the wordplay.
'with' says to put letters next to each other.
'green vegetable' becomes 'pea' (I've seen this before).
'reportedly' shows a homophone (sound like).
'unpleasant' becomes 'foul' ('foul' can be a synonym of 'unpleasant').
'foul' sounds like 'fowl'.
'pea' next to 'fowl' is 'PEAFOWL'.
(Other definitions for peafowl that I've seen before include "Peacock or peahen" , "Pheasant with fan-like tail" , "Large crested pheasant" , "Ape, wolf (anag.)" , "Large female bird" .)