Multifunctional bird repelling device

The invention relates to the technical field of agricultural bird repelling, and discloses a multifunctional bird repelling device which comprises a fixing plate, a fixing sleeve is fixedly connected to the top end of the fixing plate, a sound wave bird repelling mechanism is movably connected to the middle of the top end of the fixing sleeve, and knocking bird repelling mechanisms are movably connected to the two sides of the top end of the fixing sleeve. The side face of the sound wave bird repelling mechanism is fixedly connected with an electric control lamp, and the side, away from the sound wave bird repelling mechanism, of the top end of the fixing plate is fixedly connected with a water collecting mechanism. When the wind power blades rotate along with external wind, the wind power blades drive the reciprocating lead screws to rotate after transmission, then the two collision pieces move, when the two collision pieces move outwards till the elastic force of the springs is larger than the magnetic attr