Why eagle flies higher than other birds in the sky for a long time?

Question

Why eagle flies higher than other birds in the sky for a long time?

Answer 1

An eagle is a flying predator with excellent vision and can circle high observing a large area until it spots prey.  The eagle can sense and soar on rising columns of air called thermals.  When people go soaring in a glider (pulled aloft by a small airplane then released), the pilot positions the glider under a cloud (where moist air is rising and condensing to form the cloud).  The glider can circle under the cloud gaining altitude.  Like the eagle, the glider has a large wing area compared to its weight.  There is almost no limit to the time an eagle can soar using thermals as long as the sun is shining and the thermals are rising.  An eagle can also fly (flapping wings) like other birds to find a new thermal.

Answer 2

better ability to make use of thin O2 density at a low pressure environment.

Answer 3

In simple words...

Eagles fly higher than other birds when they use the Soaring type of flight. Actually, soaring is an easy type of flight- eagles just spread their long, rectangular wings for hours and beat it occasionally, letting the thermals of hot air carry them up to great heights like 3 miles above the surface. Thermals are groups or circles of warm air. (Like this-http://www.aerospaceweb.org/question/nat... the broken lines represent the movement of the bird in flight.) As we know, warm air rises high up above the surface. To ride thermals, a bird must posses broad wings with large surface area- and eagles have large, broad wings. This is the reason why eagles fly higher than most birds , they ride and circle on these thermals which are rising at great heights, which other birds could not do because of the small surface area of their wings.

I agree with Dragon Fire. =) I think she got it from here:

http://answers.yahoo.com/question/index;...

Hope this helps... :-)

Answer 4

u noe wat eagles love flying high in da sky wid their friend- eagles.dats da main reason dear.

Answer 5

They don't. The condor is the bird with the widest wingspan to my knowledge and therefore can glide and soar the highest and longest. The albatross is also a high flyer.

The length of wing will naturally determine how high and how long a bird can soar.

Answer 6

big wing span, powerful bird, aerodynamic

Answer 7

bigger ,more thrust

Answer 8

Eagles fly in the same way as most birds do. Here's a research on how birds fly.

It's important to understand gliding flight before we begin to talk about flapping wings.

Recall that the wings are angled slightly, which allows them to deflect the air downward and produce lift. The slight angle of the wings is called the angle of attack. If the angle of attack is too great, the wing will produce a lot of drag. If the angle is too small, the wing won't produce enough lift. The best angle depends on the shape of the wing, but it's usually just a few degrees! Notice that what matters is the angle relative to the direction of travel, not relative to the horizon.

The airfoil has a rounded front edge to help reduce air resistance. Some wings also have a curved or asymmetric shape that helps deflect the air downward. While not strictly necessary, this is typical for birds. The inner part, near the bird's body, is more curved than the outer part. As you read on, see if you can figure out why!

The wings flap with an up-and-down motion. This may change in special situations, but we aren't going to talk about those until later. When the wings move up and down, they are also moving forward through the air along with the rest of the bird. Close to the body, there is very little up and down movement. Farther out toward the wingtips, there is much more vertical motion.

As the bird is flapping along, it needs to make sure it has the correct angle of attack all along its wingspan. Since the outer part of the wing moves up and down more steeply than the inner part, the wing has to twist, so that each part of the wing can maintain just the right angle of attack. The wings are flexible, so they twist automatically. This picture shows how the wing must twist in the downstroke, to keep each part of the wing aligned with the local direction of travel.

As the wing twists, and as the outer part of the wing moves downward, the lift force in the outer part of the wing is angled forward. This is what would happen if the whole bird went into a steep dive. However, only the wing is moving downward, not the whole bird. Therefore the bird can generate a large amount of forward propulsive force or thrust, without any loss of altitude.

The air is not only deflected downward, but also to the rear. The air is forced backward just as it would be by the propeller of an airplane. You can feel this blast of air when a bird takes off from your hand.

If thrust is produced in the downstroke, you might be wondering what happens in the upstroke. Since the wing is travelling upward, shouldn't there be a lot of drag, tending to slow the bird down? To avoid this, the bird does two things:

* The outer part of the wing points straight along its line of travel so it can pass through the air with the least possible resistance. In other words, the angle of attack is reduced to zero.

* The bird partially folds its wings, which reduces the wingspan and eliminates the draggy outer part of the wing. This is not strictly necessary though, and most insects lack the capability.

The inner part of the wing is different. There is little up-and-down movement there, so that part of the wing continues to provide lift and function more or less as it would when gliding. Because only the inner part of the wing produces lift in the upstroke, the upstroke as a whole offers less lift than the downstroke. As a result, the bird's body will bob up and down slightly as the bird flies.

What you've read so far is a basic description of how birds fly, when they are already up to speed and just cruising along. Birds also have other flying techniques, which they use when taking off or landing, or for other special maneuvers. Books on bird flight will tell you more about these techniques as well as the special adaptations birds have for flight.

But eagles still have another kind of flight, and this is called SOARING. Here's a research about soaring taken from the same site.

In the Gliding page, we saw how a bird can move through the air without flapping its wings. Unfortunately, gliding flight always results in a bird moving downward through the air. Soaring flight is a special kind of glide, in which the bird flies in a rising air current. Because the air is rising, the bird can maintain its height relative to the ground.

Soaring flight can only occur at special places and times. For example, warm air heated by the sun can rise up from the hot ground and into the sky. This rising air current is called a thermal. Thermals often rise up along the slope of a hill, but they can also form over flat ground. As the air rises, it also expands and cools. (This results from the lower pressure at altitude.) Eventually, the water vapor in the thermal may become cold enough to condense, forming the tiny droplets of liquid water that make up a cloud. When you have a sunny day with puffy clouds, it's probably a good day for thermals, and you may see hawks or vultures soaring overhead.

Soaring birds can also find rising air in places where the wind is forced to flow up the side of a hill. Long ridges produce the best lift. Smaller, isolated hills don't produce as much lift because the air can flow around the sides of the hill instead of going over the top. The amount of lift and where it is found will depend on the speed and direction of the wind, as well as the shape of the land. Smaller objects such as trees or houses produce ridge lift too, though it may not be enough to keep a bird in the air.

Finally, there is one more soaring technique, called dynamic soaring. Dynamic soaring does not rely on rising air currents. Instead, it uses the difference in wind speed between the ground and higher up. Here's how it works:

* First, the bird must climb up into the faster airflow, ten or twenty meters above the ground. It climbs facing the wind, so it receives the benefit of a constantly increasing air speed as it goes up higher. It may appear that the bird is slowing down, but its speed relative to the surrounding air is actually increasing.

* Then the bird makes a turn and heads back downwind. From the ground, it seems that the bird has suddenly gained a tremendous amount of speed, because now the bird is flying along with the wind.

* Then the bird dives down into the lower, slower air. Again its air speed increases, this time assisted by gravity.

* The bird turns back upwind and repeats the cycle.

Dynamic soaring works best in places where there are no upwind obstructions that would block the wind and cause turbulence. This means flat, open ground, over the ocean, or at the top of a ridge. The albatross uses this type of soaring to support its multi-year voyages at sea.

Answer 9

did dollzzdp type that, or copy and paste that

Answer 10

Predatory birds like eagles and scavenger birds like vultures have large wingspans so they can soar without too much effort and stay aloft a long time to hunt for food.