'Feathers' in the Bible

He shall also take away its crop with its feathers and cast it beside the altar eastward, to the place of the ashes.

Immediately the word concerning Nebuchadnezzar was fulfilled; and he was driven away from mankind and began eating grass like cattle, and his body was drenched with the dew of heaven until his hair had grown like eagles’ feathers and his nails like birds’ claws.