Hrok

Hroks are giant birds found mainly in Lanayru Desert in Skyward Sword. They sit high in the air on a perch, and fly above Link when he approaches them. Once they are above him, they will spit out a boulder and try to drop it on his head. Since they never land on the ground, Link must use a projectile weapon or his Beetle to defeat the, causing a red Rupee to appear.