Bird enthusiast wanting story heard (7)
I believe the answer is:
fantail
'bird' is the definition.
(I've seen this before)
'enthusiast wanting story heard' is the wordplay.
'enthusiast' becomes 'fan' (fan is a kind of enthusiast).
'wanting' means one lot of letters go next to another.
'story' becomes 'tale' (synonyms).
'heard' indicates a 'sounds like' (homophone) clue.
'tale' sounds like 'tail'.
'fan'+'tail'='FANTAIL'
(Other definitions for fantail that I've seen before include "In a flat (anag.)" , "Flier" , "Variety of pigeon" , "Bird" , "Type of domestic pigeon" .)