PROBLEM TO BE SOLVED: To provide a bird damage prevention tool capable of easily installing a branch portion at an appropriate position. SOLUTION: The bird damage prevention tool 1 includes a shaft portion 2 and a branch portion 3 extending obliquely downward from the shaft portion 2, and the shaft portion 2 has a through hole having a bent portion 23a inside. 23 is provided, and the branch portion 3 is inserted into the through hole 23 and attached to the shaft portion 2 so as to bend at the bent portion 23a along the through hole 23. According to this bird damage prevention device 1, the length of the branch portion 3 extending from the shaft portion 2 can be optimally adjusted after being fixed to the arm metal 20A. Therefore, the length of the branch portion 3 extending from the shaft portion 2 can be easily finely adjusted while observing the state of the edge line. Therefore, it is not necessary to remove or cut the branch portion 3 which may be an obstacle in advance. [Selection diagram] Fig. 1【課題】枝部を適切な位置に容易に設置可能な鳥害防止具を提供する。【解決手段】軸部２と、前記軸部２から斜め下方に放射状に延びる枝部３とを備える鳥害防止具１であって、前記軸部２は、内部に屈曲部２３ａを有する貫通孔２３が設けられ、前記枝部３は、前記貫通孔２３に挿入され、前記貫通孔２３に沿って前記屈曲部２３ａで屈曲するようにして前記軸部２に取り付けられている。この鳥害防止具１によると、腕金２０Ａに固定した後に、軸部２から延びる枝部３の長さを最適に調節することができる。したがって、縁線の状態を見ながら、軸部２から延びる枝部３の長さを容易に微調整できる。ゆえに、邪魔になる可能性のある枝部３を予め撤去・切断する必要がない。【選択図】図１
