Show use shotguns to frighten noisy birds from roost A shot guri loaded with black powder shells which make a loud noise Is recommended by the bureau of biological survey tor for driving birds away from roosts boosts when their noise and filth become a nuisance blackbirds starlings cowbirds and english sparrows wi congregate and establish roosts boosts usually late in the summer thousands of birds may 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 da darkness they move only a few yards when the guns are used shells carrying no 6 15 or no 8 shot hot and loaded with black powder are recommended tot for noise shooting into the boosts roosts five or six evenings may be necessary in cases where large roosts boosts have been established in smaller cities and communities the use of shotguns usually la Is not forbidden by local regulations roman candles or streams of water from a hose may be effective la in localities where the use of firearms firearm Is prohibited electric lights or bells bell in trees where the birds roost ottea often drive them away protected species such as robins and purple martins sometimes ta cablish roosts boosts but do not become a great nuisance |