Meh.
I like the concept, but I guess the game was... well... more fun in concept.
Aiming at the birds was sometimes difficult, considering they always seemed to want to get as close to you as possible, and I could never seem to make enough money to buy a considerable amount of ammo for the shotgun, since I was able to buy that almost immediately.
My point?
Keep a distance on the birds and cheapen the ammo.