Bird featured in comic story on the radio (7)
I believe the answer is:
wagtail
'bird' is the definition.
(wagtail is a kind of bird)
'comic story on the radio' is the wordplay.
'comic' becomes 'wag' (wag can mean a comical person).
'story' becomes 'tale' (synonyms).
'on the radio' indicates a 'sounds like' (homophone) clue.
'tale' is a homophone of 'tail'.
'wag'+'tail'='WAGTAIL'
'featured in' acts as a link.
(Other definitions for wagtail that I've seen before include "'Bird, its posterior projection jerks up and down (7)'" , "Slender songbird - a law git (anag)" , "I tag law of the bird" , "Songbird - gala wit (anag)" , "singer" .)