Sticks together? (4)
I believe the answer is:
nest
'sticks together?' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for nest that I've seen before include "Eyrie" , "home for 22d [VIPERS]" , "Home to a bird" , "Casually thrown" , "Cosy home like bird's" .)