Any of several large, web-footed birds constituting the family Diomedeidae, chiefly of the oceans of the Southern Hemisphere, and having a hooked beak and long, narrow wings.

• 信天翁组成信天翁科的大型有脚蹼的鸟类，主要产于南半球海域，喙呈钩状，翅长而窄