Writer using wrong birds (8)
I believe the answer is:
penguins
'birds' is the definition.
(penguin is a kind of bird)
'writer using wrong' is the wordplay.
'writer' becomes 'pen' (something which writes).
'wrong' indicates an anagram.
'using' is an anagram of 'guins'.
'pen'+'guins'='PENGUINS'
(Other definitions for penguins that I've seen before include "Flightless birds of Antarctic regions" , "Flightless sea-birds" , "E.g. Kings and Emperors" , "Flightless birds of cold regions" , "books" .)