Related Clues:

• Birds with dark green eggs
• Tall runners
• Ratite birds
• Long-gone birds
• Boneheads
• Ostriches' kin
• Dim bulbs, so to speak
• Dim bulbs
• Cousins of an ostrich
• Some ratites
• Flightless Australian bird
• They're grounded
• Dimwits
• Birds with green eggs
• Skin oil suppliers