Young birds (6)
'young birds' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for chicks that I've seen before include "have come out of their shells" , "Young birds" , "American girls" .)
'young birds' is the definition.
(nestling is a kind of young bird)
This is all the clue.
(Other definitions for nestlings that I've seen before include "Mummy bird has them" , "Baby birds" , "brood" , "Young birds" .)