Little bird impression made on the radio? (6)
I believe the answer is:
cygnet
'little bird' is the definition.
'cygnet' can be an answer for 'bird' (I've seen this before). I'm not sure about the 'little' bit.
I don't understand the remainder of the clue.
Can you help me to learn more?
(Other definitions for cygnet that I've seen before include "that's no ugly duckling" , "small pen? Possibly" , "Young aquatic bird" , "Sounds like the type of ring" , "Little swan" .)