It's better to be a beak! (5)
I believe the answer is:
finer
'it's better' is the definition.
(I've seen this in another clue)
I can't explain the rest of the clue.
Can you help me to learn more?
(Other definitions for finer that I've seen before include "Better; more slender" , "More thin, excellent" , "Better quality" , "Of higher quality" , "'Nothing could be . . . . . than to be in Carolina, in the morning' (popular song)" .)