Nothing consumed by hungry duck (5)
I believe the answer is:
avoid
'duck' is the definition.
(duck can mean to avoid)
'nothing consumed by hungry' is the wordplay.
'nothing' becomes 'O' (O resembles 0).
'consumed by' indicates putting letters inside (inserted letters get consumed).
'hungry' becomes 'avid' (I've seen this in another clue).
'o' inserted inside 'avid' is 'AVOID'.
(Other definitions for avoid that I've seen before include "Refrain from (something)" , "Fend off" , "Steer clear of, dodge" , "Run away from" , "Miss" .)