How do birds fly?

by Guest6577  |  13 years ago

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How do birds fly?

 Tags: birds, fly



  1. Guest5549

  2. Guest3420
    the flapping of their wings creates air turbulence when the wind then goes over the top of the wing and under the bottom causing lift.
  3. Guest3866
    BirdsBirds learn how to fly much like a human toddler learns to walk - a combination of instinct and practice. Not all birdsbirdsbirds are instinctive flyers, however. Flightless birdsbirdsbirds such as penguins and ostriches no longer have the instinct to imitate their flying cousins. Newborns of bird species which do fly, such as pigeons or hummingbirds, have an innate sense that flying is a natural act. Compare this to an human baby who instinctively understands that standing upright is a natural goal to achieve.

    Most birdsbirdsbirds cannot fly until their muscle structure has had time to develop. In the meantime, the nest becomes their entire world. Baby birdsbirdsbirds are not responsible for food gathering or protection of the nest, so they generally develop a psychological dependence which must be overcome. Parent birdsbirdsbirds begin to teach their fledglings the importance of flying by remaining a short distance away from the nest during feeding. If the young birdsbirdsbirds are to survive, they must step away from the nest. Frequently, this means a few hard falls to the ground followed a long trip back to the safety of the nest.

    All of this practice time, awkward as it may seem, does teach the fledgling about the mechanics of flight. Falls to the ground become more controlled as the young bird stretches out his or her wings. Short hops back to the nest become longer flights. Bird parents continue to encourage their brood to leave the nest for longer periods of time. Some species actually adopt a tough love policy, leaving the fledglings alone to develop their own flying instincts.

    After a few weeks of practice and imitation, young birdsbirdsbirds learn more advanced flying techniques - how to use the wind for lift, how to spot rising thermals and how to make controlled landings. Eventually, all of these elements become instinctive and young birdsbirdsbirds can start families of their own. The teaching process begins anew as these birdsbirdsbirds teach their own young how to fly.

    For birdsbirdsbirds, flying is an incredibly taxing exercise. Some bird experts compare it to human jogging times ten. Fortunately, many birdsbirdsbirds have air sacs which act as auxiliary lungs. Each breath a bird takes is much more concentrated than an equivalent human breath. BirdsBirdsBirds also have very well-developed pectoral muscles for constant wing motion and an exceptionally strong heart for endurance. Hollow bones reduce drag and the natural curve of the wings creates significant lift. Most birdsbirdsbirds are literally swimming through the air, using the weight of the air beneath them to keep them aloft.
  4. Guest2581
    They flap their wings and soar.
  5. Brett
    The fact that birds fly is indeed amazing. Birds are the ultimate flying machines, though insects have been doing it for longer and in many cases are more versatile. Birds fly far better than any machinery mankind has yet made and like our machines they use their wings and tails in a variety of ways to achieve their expertise.
    The flight of a bird is dependent on the shape of its wings and the way the bird use them. Generally, flight of a bird can be divided into two modes:  gliding or soaring flight, and flapping or powered flight.

    The wings of a bird are not flat they are concave. The air that moves over the wing has to go farther get across the wing, thus it speeds up.  This causes the pressure to drop because the same amount of air is exerting its pressure over a greater area. Therefore, any given point experiences less pressure. This effectively sucks the wing up. Meanwhile the air going below the wing experiences the opposite effect. It slows down, generates more pressure and effectively pushes the wing up.

    Hence a bird with air moving over its wings is pulled up from above and pushed up from below.
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