Tiny bird in tear-jerking film (6)
I believe the answer is:
weepie
'tear-jerking film' is the definition.
(a film that makes you cry)
'tiny bird' is the wordplay.
'tiny' becomes 'wee' (I've seen this in another clue).
'bird' becomes 'pie' (sort of bird).
'wee'+'pie'='WEEPIE'
'in' is the link.
(Other definitions for weepie that I've seen before include "Sentimental film (colloq.)" , "Highly emotional film" , "is sad to see" , "Love Story, among many" , "tear-jerking film" .)