Show use shotguns shotgun s to frighten noisy birds from roost A shotgun 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 H english sparrows congregate and establish roosts boosts usually late in the summer thousands of birds may gather in a single tree guns are most effective if used t arly in tile 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 carrying no 0 3 or no 8 shot and loaded with black powder tire are recommended for noise shooting into tho aitho roosts boosts five or six els evenings may be necessary in cases where large roosts boosts have been established in smaller cities and the use of shotguns aug usually Is not forbidden by local regulations roman candles candies or streams of water z froni from a hoso may be effective in localities where tho the uso of firearms Is prohibited electric lights or bells ablis in trees where t the he birds roost often drive them away protected species such as ag robins and purple martins sometimes es roosts boosts but do not become a great nuisance ce |