The same hour was the thing fulfilled upon Nebuchadnezzar: and he was driven from men, and did eat grass as oxen, and his body was wet with the dew of heaven, till hishairsweregrown like eagles'feathers, and his nails like birds'claws.

-Bible (Old Testament)
Daniel 4:33.

When o'er the hill the eastern star Tells bughtin-time is near, my jo, And owsen frae the furrowed field Return sae dowf and weary O.

-Burns, Robert
  'My ain kind dearie', or 'The Lea-rig', stanza1.