migration

=Migration =

Raptors migrate to find more food, because most of their prey burrows underground, so they need to find more food. They migrate by flying with the Atlantic Flyway, thermals, and updrafts. It helps us understand migration because the movie shows the Amur falcons using updrafts and thermals because the falcons are flying up in a cyclone-like shape and then gliding down and catching another thermal/updraft and repeating the process. The migrating raptors conserve a lot of energy this way, and get to their destination faster. There is a theory that birds migrate by using the Earth's magnetic field to get to their destination, so they get there.

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media type="youtube" key="6LTJB5rXP30" height="314" width="420" In Himeville, a lot of Amur hawks are ready to migrate back from South Africa to Siberia and Northern China for the spring and summer > This is a picture that shows how a bird uses updrafts/thermals to fly farther and conserve energy. The dotted lines represent the flight of the bird. A thermal is a rising current of warm air. An updraft is an upward movement of air or other gas. Where the peregrine falcons would migrate.
 * 1) Most falcons live in Europe, Asia, and North America, most buteo live in North America, but a few species of buteo live in Europe and one specie lives in Asia.
 * 2) The North American raptors use the North Eastern Flyways or/and the Atlantic flyway to migrate to South America
 * 3) Migrating raptors use thermals and updrafts to conserve energy to fly farther.
 * 4) The best time for flying is mid-day, because that is when the sun is the hottest, so it warms up the ground and creates a thermal by warming the earth which warms the air above it, which raises the air in and creates an updraft. Raptors use this to fly high, then glide down and repeat the process by catching another updraft. By doing this, the migrating raptors conserve a lot of energy, thus making the migration a lot easier and faster.
 * 5) [[image:http://www.birdnature.com/Atlantic.jpg width="416" height="330" caption="Atlantic Flyway with Principal Routes"]]
 * 6) [[image:http://www.genosplace.org/sailplaneweb/thermals1.jpg]]
 * 1) These are some birds that migrate and roughly when they migrate. [[image:http://www.hawkmountain.org/images/thumb?w=620&h=349&img=/data/uploads/media//image//07312011130516_BestTimeToSeeRaptorsAtHawkMountain.jpg caption="Best Time To See Raptors at Hawk Mountain"]]