Western Screech Owl juvenile: hunting

One of the Western Screech Owl juveniles in the family of owls I have been following practices it's hunting skills. It flies down to the ground less than 20 feet from where I standing, then pounces on some unseen object a few feet away, then flies off to a nearby tree. It was successful as in a subsequent video clip it is shown eating something it has in it's claws. SeEtta