PROBLEM TO BE SOLVED: To improve workability of attachment / detachment work to / from an electric wire, to improve worker's safety due to improvement in workability, and further to perform safety during various works such as attachment / detachment of a bird damage prevention tool to / from an electric wire. Provide a bird damage prevention device having improved SOLUTION: The electric wire attaching portion to be attached to the electric wire and the spacing portion protruding from the electric wire attaching portion are provided, and a plurality of electric wire attaching portions are attached at intervals along the longitudinal direction of the electric wire via the electric wire attaching portion. A bird damage prevention tool for preventing a bird from flying by installing a line material between each of the separated portions substantially in parallel with the electric wire, wherein the electric wire mounting portion has an opening for inserting the electric wire and the opening. A lid portion is provided which has a shaft portion provided and an engagement portion, and the base portion of the shaft portion is rotatably pivotally supported to close the opening portion which can be opened and closed. Has an engaged portion that engages with the engaging portion, and maintains the closed state of the lid portion in the engaged state. [Selection diagram]【課題】 電線に対する取り付けおよび取り外し作業の作業性向上、作業性向上に伴う作業者の安全性向上、更には鳥害防止具の電線に対する取り付けおよび取り外し等の各種作業中や、使用中の安全性が向上した鳥害防止具を提供する。【解決手段】 電線に取り付けられる電線取付部と、該電線取付部に突設された離隔部とを備え、電線取付部を介して電線の長手方向に沿って間隔をあけて複数取り付けられると共に、各々の離隔部の間に電線と略平行にライン材を架設して鳥の飛来を防ぐ鳥害防止具であって、 電線取付部は、電線を挿入するための開口部と、該開口部に設けられた軸部と、係合部とを有しており、前記軸部において基部を回動自在に軸支されて開閉自在である前記開口部を塞ぐための蓋部を備え、該蓋部は前記係合部に係合する被係合部を有していて、係合状態において蓋部の閉状態が保持されることを特徴とする。【選択図】 図１
