Abstract: Provided is a bird repellent apparatus which can maintain the invasion prevention effect even on shrewd birds having a learning ability over a long period of time. A projection on the head portion side of an upper edge portion of both wings of a hawk imitating body is 3D-formed in a hawk-like geometry, being made of a rain resistant thin material having a shape of thorns similar to holly leaf ones on the periphery thereof. Hawk imitating body is colored black as a whole, with beak, parietal portion, wing edge portion, eyes, and nails being colored silver; the projection is supported such that it can be rocked in a definite direction by wind, the lower portion of a shaft thereof being located inside the body; and a head portion of hawk imitating body is directed slightly downward of the horizontal line such that the eyes look down.