BIRD REPELLING METHOD Russian patent published in 2005 - IPC

FIELD: agriculture, in particular, methods for repelling of birds from national economy objects.

SUBSTANCE: method involves attaching at least one acoustic whistle to rockets grain stabilizer, said rockets grain being launched towards stock of birds and being adapted for burning in vibrational mode. Geometric sizes of whistles provide for required amplitude-frequency characteristics of sound. During flying of said device, approach air stream passes through whistles and periodically generates acoustic signals simulating cries of predatory birds and attracting additional attention of birds to be repelled to silhouette of device during the entire period of flight. Cries of various predatory birds may be simulated through selection of whistles with predetermined geometric sizes.

EFFECT: increased efficiency and simplified method.

4 dwg