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Adult peregrine falcons have black and gray wings, dark brown backs, and a buff colored underside with brown spots. If you look closely at a picture you can see that they have a small black teardrop shape on their cheek. The falcons have hooked beaks and strong talons. They have a wingspan of 36-45 inches. Peregrine falcons weight about two pounds and are 15 to 21 inches. The peregrine falcons average speed is 240 miles per hour!

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The peregrine falcons were put on the endangered species list because of DDT poisoning. Farmers used DDT to stop insects from getting in the crops, but the chemical got into the eggs of the falcon and caused the eggshells to thin. That soon caused a drop of population. In 1975, it was indicated that only 324 nesting pairs existed, compared to 3,875 pairs prior to the DDT usage. Soon after, in 1999 the peregrine falcons were cleared from the endangered species list.

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The peregrine falcons start off as eggs. The eggs are a whitish to pale, reddish brown color. The incubation starts by the female and goes on for 32-35 days. After the falcon is an egg, it becomes a eyas. The eyas stays in the nest for six weeks, learning how to fly and eating lots of food. After the young's first flight the young falcon  becomes a fledging. The peregrine falcon's life span is 15 to 17 years.

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Peregrine falcons often sit on high perches, waiting to make their attack. They swoop down to catch their prey at 200 miles per hour. Because the falcons have wings that are long and pointed back they can go faster and catch their prey faster. The peregrine falcons usually hunt with a swift chase or fast dive. They are so fast that they can catch their prey in mid-air and take them by surprise.

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The peregrine falcon's name comes from the Latin word Peregrinus. Their name means "wanderer". They are commonly referred to as the Duck Hawk. These falcons have vision that is better than humans! Female birds weigh more than the male birds. The peregrine falcon's are the fastest flying birds in the world.

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Peregrine falcons have few natural predators. The only real danger to them is humans and sometimes owls. The falcons eat bats, geese, shore birds, and songbirds. They also eat small insects and bigger animals such as ducks and pigeons. Mourning doves, reptiles and mammels are prey for the peregrine falcons too.

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The peregrine falcons are found on every continent but Antarctica, but they can be seen all over North America the most. The falcons have adapted to living in many cities and making use of tall building's. If a peregrine falcon finds a tall structure, they will stay there because it provides good nesting options. They are also found on grasslands and any wide-open space. They can survive in urban cities, the tropics and deserts.