The Orchid Island Monarch Butterfly, which consigns its young only to "birthwort," or the guinea fowl, which likes to hide in the dense thickets on the edge of a field so that often people can only hear its squawk, are both examples. Reduction of Species: The restructuring of nature undertaken by man invisibly is a kind of "unnatural selection" for animals.
「八、九年前溫州街台大宿舍尚未改建，我們常在那兒抓三斑」，研究魚類的台灣大學動物系博士班研究生曾晴賢說，如今研究人員翻遍郊區池塘、灌溉渠道、水田，已遍尋不著三斑遊蹤。