Corneous formation covering toothless jaws ; the bird uses it to feed .

包括无牙的下颌的角状的形成;这只鸟使用它哺养。

Very curved and pointy corneous structure allowing the bird to seize its prey .

非常弯曲的和非常尖的角状的结构允许鸟占领它的猎物。

Solid corneous upper portion of the shaft of the contour feather ; it is an extension of the calamus and the barbs are attached to it .

廓羽的轴的坚实角状的上部部分;它是羽根的引伸，并且倒钩附有它。