Amateur duck? (7)
I believe the answer is:
dabbler
I believe this is a double definition.
'amateur' is the first definition.
(I know that dabbler is a type of amateur)
'duck?' is the second definition.
(I know that dabbler is a type of duck)
(Other definitions for dabbler that I've seen before include "Dilettante" , "amateur" , "Someone with passing interest" .)