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View Diary: Fly like an eagle (21 comments)

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  •  but their bones are hollow (1+ / 0-)
    Recommended by:
    Kevskos

    so they're much lighter than they look. For example, adult male bald eagles weigh about 9 pounds, and females about 12 or 13.

    •  Put wings on your average bowling ball. (2+ / 0-)
      Recommended by:
      mightymouse, IreGyre

      Does it fly?

      The mass to volume ratio of birds is one miracle of the evolution of our fathered friends. Two other facts add to the fascination:

      1) aerodynamic and aeronautical form that gives them amazing lift with very little drag.

      2) sensory feedback that gives them the ability to fly on very tiny thermal differences in the air that increase lift without exerting additional energy to gain altitude

      I don't say this to give my favorite class of animals mystical properties. I just marvel that this class of animals is so efficient in flight.

      To tweet or not to tweet. I tweet therefore I am.

      by RadicalParrot on Wed Sep 18, 2013 at 11:35:47 AM PDT

      [ Parent ]

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