Fledgling's home (4)
I believe the answer is:
nest
'fledgling's home' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for nest that I've seen before include "breeding-ground" , "Structure built by birds" , "In which to lay eggs or give birth" , "Sent to avian home" , "Rook's residence?" .)