Related Clues:

• Fly-by-night birds
• Ululating birds
• Some rat catchers
• A type of clover
• Fly-by-night critters
• They fly by night
• They sometimes have great horns
• Temple U. team
• They give a hoot
• Night fliers
• Barn birds
•     Temple University team, with 'the'
• Forest hooters
• Snowy and gray?
• Birds with rare binocular vision