Holding swallow tail in fist, pluck bird (5,3)
I believe the answer is:
great tit
'bird' is the definition.
(I've seen this before)
I don't understand the remainder of the clue.
Can you help me to learn more?
(Other definitions for great tit that I've seen before include "A bird; target it (anag)" , "Black-headed bird" , "Bird changed" , "Singer" , "Small songbird" .)