Related Clues:

• Dullard
• Slow one
• Dingbat
• Bird that's more than rare
• Dumb ox
• Extinct flightless bird
• Dull-witted one
• Stupid person
• Bird that is no more
• Dumb one
• One slow on the uptake
• Ignoramus
• Eccentric sort
• Extinct Mauritian
• It's been extinct since the late 17th century