A double-crested cormorant surfaces after catching an alewife near the outlet of Damariscotta Lake, Friday, May 15, in Newcastle, Maine. 五月十五日周五在缅因州纽卡索的达马瑞斯哥塔湖,头部有双冠的鸬鹚在抓到一只条鳍鱼后滑出水面。
Phalacrocoracidae is a family of some 40 species of aquatic birds commonly known as cormorants and shags. Several different classifications of the family have been proposed recently, and the number of genera is disputed. There is no consistent distinction between "cormorants" and "shags", and these appellations have been assigned to different species randomly.