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.

瑞一些山谷安装了路之后，欧洲较少数的菊头已经消失，这很有可能是山谷中突然充斥着路的麦氏油的缘故。