Hack cuddles hot bird (6)
I believe the answer is:
chough
'bird' is the definition.
(type of bird)
'hack cuddles hot' is the wordplay.
'hack' becomes 'cough' (hack can mean to cough).
'cuddles' is an insertion indicator.
'hot' becomes 'h' (abbreviation eg on taps).
'cough' enclosing 'h' is 'CHOUGH'.
(Other definitions for chough that I've seen before include "Crow-like bird of cliffs and mountains" , "singer" , "Black bird on Cornish coat of arms" , "Bird of the crow family" .)