Kept area free for bird (8)
I believe the answer is:
parakeet
'bird' is the definition.
(parakeet is a kind of bird)
'kept area free' is the wordplay.
'free' indicates an anagram.
'kept'+'area'='keptarea'
'keptarea' anagrammed gives 'PARAKEET'.
'for' is the link.
(Other definitions for parakeet that I've seen before include "Small long-tailed parrot" , "Brightly-coloured African bird" , "Type of parrot" , "Colourful singer" , "Small long-tailed bird" .)