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In 1947 people stared to use DDT on their plants and when it rains it get into water and the Peregrine Falcons prey mite drink it then it go into it body and make the egg shell soft and they will break. Next between 1980-1990, the number of Falcons  in North America tripled from 499 to 1540. In 1975 survey indicated only 324 nesting pairs exist in North America, compared to approximately 3,875 prior to DDT usage.In 1999 - American peregrine falcon is delisted due recovery. One of the most successful species recoveries in the world.

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First they fight their prey and start the process. Next they pump their wing the and  reach 50 mph. After that they Then they fold the wings tight against its body. After they reach up to  240 mph and keep eye on their prey. At the end they put the talon and  hit the prey. Most of the time the hit it so hard that they kill the prey by hitting it.

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They have blue-gray wings, dark brow backs, a buff colored underside with brown spots, and white faces with a black tear stripe on their cheeks.The baby has white feather. The adult have long pointed wings. They are about   14 to 19 inches and their  wingspan is 3.3 to 3.6 feet it. One more thing is that the males are smaller than female.

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First, there are eggs that are a whitish to pale reddish-brown, heavily marked with warm brown color. Next, comes the eyas that have white fathers and they will have their first flight at 39-49 days. After the make their first flight they are a fledgling. At last, they are adult and they make a aerie witch is a nest for big birds in trees or on a cliff.

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The Peregrine Falcons are at the top of the food chain so the do not have many predators but there are a few and they are great horned owls and other big birds.They will eat most birds like ducks, songbirds and, as well as bats. The will eat most birds and that are just a few. The will eat some small mammals and seldom insects, but this happen rarely.

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The Peregrine Falcons live almost everywhere and the one stop the do not live is Antarctica. The will make their aerie on cliffs in urban areas and canyons most of the time. The will find these places by water. In the urban areas the will live on tall buildings or brides. This is not always safe for the Falcons because the will run into window and get hurt.