Short-necked duck
I believe the answer is:
teal
'short-necked duck' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for teal that I've seen before include "Small, short-necked duck" , "Bluish shade of green" , "Duck; greenish-blue colour" , "Dark greenish-blue colour" , "Strange tale of a duck" .)