My wife is fond of putting out bird feeders full of various seeds to attract the pretty little birds she likes to watch, goldfinch, wrens, robins, jays, etc. She is not fond at all of robbers in the feeders, so I keep them thinned out pretty well with a Benjamin pump gun shooting .20 cal lead pellets and mounted with an inexpensive Simmons scope. Very quiet, no complaints from neighbors, and effective.