Related Clues:

• Tiny bit of concern
• YA novel by Carl Hiaasen about a threatened owl habitat
• Horn; nose
• Nocturnal call
• Sound of laughter (or disapproval)
• Noise made by member of parliament in riot
• Head cut off in photograph, laugh
• Owl noise
• Owl beak
• 2 down that smells
• "I'm an owl!"
• Bird sound from a barn
• "Give a __! Don't pollute!"