Bird (European) found in French gin after processing (10)
I believe the answer is:
greenfinch
'bird' is the definition.
(type of bird)
'european found in french gin after processing' is the wordplay.
'european' becomes 'E' (abbreviation e.g. EU).
'found in' means one lot of letters goes inside another.
'after processing' is an anagram indicator (I've seen this in other clues).
'french'+'gin'='frenchgin'
'frenchgin' is an anagram of 'grenfinch'.
'e' placed inside 'grenfinch' is 'GREENFINCH'.
(Other definitions for greenfinch that I've seen before include "Her fencing (anag.)" , "bird" , "Large seed-eater" , "Winger" , "Seed-eating songbird" .)