How much do you know about birds?
Can you answer the question asked?ūü§Ē
  
Quiz of the Day
  
  
ANSWER: d. Hummingbird
  

A hummingbird’s wings beat as fast as 80 times per second, the fastest of any in the world. Its wing joints rotate, as well. These features allow him to hover in place and fly backwards, upside-down and sideways. (play.howstuffworks.com)

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