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。