Tenth little bird with huge wings (5)
I believe the answer is:
tithe
'tenth' is the definition.
(a tenth of one's income given to a church)
'little bird with huge wings' is the wordplay.
'little bird' becomes 'tit' (I've seen this in another clue).
'with' says to put letters next to each other.
'wings' says to hollow out the word (remove centre letters) (the wings or edge letters of the word are used).
'huge' with its centre removed is 'he'.
'tit'+'he'='TITHE'
(Other definitions for tithe that I've seen before include "Former church tax" , "Ancient tax" , "Levy of one tenth of something" , "Tenth part once paid as tax" , "Church payment" .)