shieldtail

例句：

1. 1. The bird's shieldtail is a striking feature of its plumage.
   这只鸟的护尾是其羽毛中引人注目的特征。
2. 2. The animal's shieldtail is used as a defense against predators.
   这种动物的护尾是用来防御捕食者的。
3. 3. The hooded tail of the bird serves as insulation to keep it warm in cold weather.
   这只鸟的护尾起到了保温的作用，使其在寒冷的天气中保持温暖。