Possible Clues:

• The cry of a crow
• Golly! Sounds like a bird's cry
• Sound made by a crow, say
• Sound over a cornfield
• "The crows seemed to be calling his name, thought ___" (one of Jack Handey's "Deep Thoughts")
• Unlovely bird sound
• Corn field cry
• Crow noise
• Sound made by rook, out of its throat
• Control action wide on one flank, as rook does