Very hungry bird comes to love us (8)
I believe the answer is:
ravenous
'very hungry' is the definition.
(I've seen this before)
'bird comes to love us' is the wordplay.
'bird' becomes 'raven' (raven is a kind of bird**).
'comes to' says to put letters next to each other.
'love' becomes 'o' (In tennis, 'love' means 'zero').
'raven'+'o'+'us'='RAVENOUS'
(Other definitions for ravenous that I've seen before include "Intensely hungry" , "Really hungry, starving" , "Voracious" , "needing to be fed" , "Voraciously hungry" .)