Bird dressed to suit me (8)
I believe the answer is:
titmouse
'bird' is the definition.
(titmouse is a kind of bird)
'dressed to suit me' is the wordplay.
'dressed' indicates an anagram ('dress' can mean 'prepare').
'to'+'suit'+'me'='tosuitme'
'tosuitme' is an anagram of 'TITMOUSE'.
(Other definitions for titmouse that I've seen before include "Small bird" , "Small songbird" .)