long-necked river duck of the Old and New Worlds having elongated central tail feathers
同义词：pin-tailed duck, Anas acuta
pintail详细解释
pin.tail n.（名词）【复数】pintail 或 pin.tails A duck(Anas acuta) of the Northern Hemisphere, having gray, brown, and white plumage and a sharply pointed tail. Also called sprigtail 针尾松鸡：北半球一种鸭（针尾鸭） ，有灰色、棕色和白色羽毛及尖尖的尾巴 也作 sprigtail
