Chipping Sparrow with half a bill

We see a few deformities every now and then and many times it is part of the bill that shows the deformity. Like this Chipping Sparrow we caught today (20th Nov). The bill was mostly there but the end of it was...well...just missing. The bird was rather healthy however so it seems it has learned to overcome the deformity and live a fairly decent life. It appeared that the sides of the bill were formed well enough that it could crack and peel seeds like a normal bill would, which might be the reason this bird was doing well.