Hello fellow Californian, I live in Norco, not to far from you...
I really like this idea too, but I think you could still get in legal trouble doing it this way. Which is a shame because humans do it for fun, exercise, self defense and the good ones do it profesionally. I guess the difference is that humans can willingly consent.
There was even a guy (in the phillipines I think) who came up with an electronic glove that would tally points for each successful hit. and it made a specific noise for each bird when a point was scored... I will try to find link.