Birds have hollow bones which make them very light. Also the feathers pick up wind to help them lift off so when they flap there wings they go in the air.
2006-12-02 03:51:05
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answer #1
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answered by penguo01 2
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some move in a circular motion, but most small ones make the front of their wings move first then the back of the wings move following. like such: /\/\/\. but not straight up and down. the air under the wings has a constant pressure, while the air over the wings is reduced by the hump looking thing on the top of the wing (this hump is where the bone is). thus since the pressure is constant on the bottom, and the pressure on the top is reduced the air causes it to rise.
2006-12-02 11:31:37
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answer #2
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answered by Anonymous
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I think I read its a combination of things. Included is that an airplanes wing is designed similar so when it glides the same force that works with a bird also works with a plane in that the wing shape provides lift. Easily seen in eagles. They also push through the air for forward locomotion. It also seems that when they land they create a high pressure zone under them like a harrier jet coming in for a standstill landing
2006-12-02 11:15:33
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answer #3
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answered by i_m_f_2009 2
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I'm with the previous posters, here....
They flap their wings - but - when examined closely, one would note that the wings don't simply move in an up-and-down motion... Rather, it's a circular motion - that is, birds' wings push down and back at the same time
2006-12-02 11:08:21
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answer #4
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answered by nowyermessingwithasonofabitch 4
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they have light body, big pair of wings, when they flap thier wings, the wings push the air down and the air pushes them back up. That is how they fly
2006-12-02 11:05:53
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answer #5
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answered by 7
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With their wings
2006-12-02 11:23:18
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answer #6
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answered by sparklindiamondsatine 5
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there wings are used to give them lift. God wanted it that way.
2006-12-02 11:30:28
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answer #7
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answered by Rass Cal 1
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using theri wings
2006-12-02 11:06:33
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answer #8
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answered by Anonymous
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by moving their wings
2006-12-02 11:03:50
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answer #9
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answered by U.O. 3
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by flapping their wings
2006-12-02 11:03:56
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answer #10
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answered by Anonymous
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