PROBLEM TO BE SOLVED: To provide a bird perching prevention tool which can prevent bird perching reliably, by eliminating a space where birds perch, without having adverse effect on the wires or insulators.SOLUTION: The bird perching prevention tool includes a plurality of needles 11 projecting upward, and a base end coupling member 15 for coupling the base ends of the plurality of needles 11, which are molded of insulating resin. The plurality of needles 11 are arrayed in the longitudinal direction N, and the height Ha of a needle 11A disposed at the outermost end in the longitudinal direction N is set shorter than the height Hb of a needle 11B disposed at an intermediate part in the longitudinal direction N.COPYRIGHT: (C)2014,JPO&INPIT【課題】電線や碍子に悪影響を及ぼさずに、鳥類が駐鳥する虞のあるスペースを無くして、確実に駐鳥を防止可能な駐鳥防止具を提供する。【解決手段】上方突出状の複数本の針11と、複数本の針11の基端部を連結する基端連結部材15と、を絶縁性樹脂で成形した駐鳥防止具であって、複数本の針11が長手方向Nに列設され、長手方向Nの最端部に配設される最端針11Aの高さ寸法Haを、長手方向Nの中間部に配設される縦中間針11Bの高さ寸法Hbよりも小さく設定した。【選択図】図1