A bird repelling device includes a solar cell panel which collects solar heat and converts the collected solar heat into electrical energy a charging unit which stores the electrical energy received from the solar cell panel a controller which controls the electrical energy stored in the charging unit a bird sensor which receives power from the charging unit and detects the approach of birds a sound generating unit and a sound wave generating unit which are operated by a signal transmitted from the bird sensor a moving unit which is moved by a drive motor that is operated by a signal transmitted from the bird sensor and a hollow body which is coupled to the solar cell panel and houses the charging device, the controller and the drive motor therein.
