Bird closed beak on morsel (6)
I believe the answer is:
titbit
'morsel' is the definition.
(I've seen this before)
I can't explain the remainder of the clue.
Can you help me to learn more?
(Other definitions for titbit that I've seen before include "Delicacy" , "Dainty morsel" , "Choice bit of something, food or gossip" , "Small item of gossip" , "Small piece of tasty food" .)