Blue bird (3)
I believe the answer is:
jay
'blue bird' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for jay that I've seen before include "Colourful member of crow family" , "Colourful type of crow" , "-- Gatsby, F. Scott Fitzgerald character" , "Garden bird" , "Colourful British bird" .)