Show use shotguns to frighten noisy birds from roost A shotgun loaded with bla black ck pow der shells which make inake a loud ms noise Is recommended by the bureau of biological survey for driving birds away from roosts when their noise and filth become a nuisance blackbirds starlings cowbirds and sparrows congregate and establish roosts usually late in the summer thousands of birds kiy gather in a single tree guns are most effective it if used early in the evening when the birds first appear then they are more easily frightened after darkness they move only a few yards when the guns are used shells ca carrying r tying no 6 or no 8 shot and loaded with black powder are recommended tor for noise shooting into the roosts five or six evenings may be necessary in cases where large roosts have been established in smaller cities and communities the use of shot guns usually Is not forbidden by local regulations roman candles or streams of wa ter from a hose may be effective in localities where the use of firearms Is prohibited electric lights or bells in trees where the birds roost often drive them away protected species such as robins and purple martins sometimes establish roosts but do not become a great nuisance |