Bird — boy's name (6)
I believe the answer is:
martin
This clue is a double definition.
'bird' is the first definition.
(martin is a kind of bird)
'boy's name' is the second definition.
(Other definitions for martin that I've seen before include "Dickens novel featuring Mr Pecksniff" , "-- Chuzzlewit (Dickens)" , "Male name, bird" , "Dickens novel partly set in America" , "Tweeter" .)