In some Swiss valleys the European lesser horseshoe bat began to vanish after streetlights were installed, perhaps because those valleys were suddenly filled with light-feeding pipistrelle bats.

瑞士一些山谷安装了路灯之后，欧洲较少数菊头蝠已经消失，这很有可能是山谷中突然充路灯食油蝠缘故。