2007-04-27 19:18:14 · 7 answers · asked by dingledop 2 in Pets ➔ Birds
they flap them ;)
2007-04-27 19:23:46 · answer #1 · answered by raspberryswirrrl 6 · 0⤊ 0⤋
The fundamentals of bird flight are similar to those of aircraft. Lift force is produced by the action of air flow on the wing, which is an airfoil/aerofoil ...Flapping involves two stages: the down-stroke, which provides the majority of the thrust, and the up-stroke, which can also (depending on the bird's wings) provide some upward force. At each up-stroke the wing is slightly folded inwards to reduce upward resistance. Birds change the angle of attack between the up-stroke and the down-stroke of their wings.
2007-04-28 04:51:26 · answer #2 · answered by Faerie loue 5 · 1⤊ 0⤋
It's very complex - it involves different types of feathers for different uses, air currents and gravity. The whole of a bird's anatomy is specifically designed to allow them the power of flight, not just their wings. I think this will explain it best:
http://en.wikipedia.org/wiki/Bird_flight
Chalice
2007-04-28 07:49:41 · answer #3 · answered by Chalice 7 · 0⤊ 0⤋
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2007-04-28 02:25:05 · answer #4 · answered by ram 1 · 0⤊ 2⤋
the wings help to overcome the gravity, so they fly afloat in the air
2007-04-28 02:27:20 · answer #5 · answered by Anonymous · 0⤊ 0⤋
There are four forces which makes birds to fly.
Four forces (thrust and drag, lift and weight) helps them to fly.
Same for airplanes too.
2007-04-28 03:09:12 · answer #6 · answered by Truth 3 · 0⤊ 0⤋
no idea
2007-04-28 02:35:01 · answer #7 · answered by Anonymous · 0⤊ 1⤋
?
2007-04-28 02:50:39 · answer #8 · answered by millymoo2000 2 · 0⤊ 1⤋