14 to 19 inches (36 to 48 cm)
3.3 to 3.6 feet (1 to 1.1 m)
1.2 to 2.2 pounds (0.5 to 1 kg)
Weight (Male)
1.8 to 3.3 pounds (0.8 to 1.5 kg)
Weight (Female)


The Peregrine Falcon, scientifically known as Falco peregrinus, is a renowned bird of prey and one of the most widespread raptors globally. Belonging to the family Falconidae, it is a member of the order Falconiformes, which encompasses diurnal birds of prey distinguished by their sharp talons and hooked beaks. This order includes various species of falcons, eagles, vultures, and hawks.

The Peregrine Falcon is admired for its remarkable speed and agility in flight, particularly during its hunting stoop (dive), where it can reach speeds over 200 miles per hour (322 km/h), making it one of the fastest animals on the planet. This incredible hunting strategy, combined with its keen eyesight, makes it a formidable predator in the skies.

Adult Peregrine Falcons have distinctive plumage with a blue-gray back, barred white underparts, and a black head with a characteristic “moustache” mark. They exhibit sexual dimorphism, with females typically larger than males.

These falcons are found on all continents except Antarctica, inhabiting a wide range of environments, from urban skyscrapers to coastal cliffs and mountain ranges. Their adaptability to various habitats is a testament to their evolutionary success.

Peregrine Falcons play a significant ecological role as apex aerial predators. Their conservation status has been a success story; after facing severe declines due to pesticide use in the mid-20th century, concerted conservation efforts have led to a substantial recovery of their populations worldwide. This resurgence highlights the effectiveness of environmental protection and species management programs.

Critically Endangered
Near Threatened
Least Concern

Physical Characteristics

The Peregrine Falcon, known for its speed and agility, has a distinctive physical appearance:

Physical Appearance:

  • Plumage: Peregrine Falcons have a sleek, aerodynamic body with blue-gray plumage on the back and wings and lighter, barred underparts. They have a distinctive black “moustache” that contrasts with their white face.
  • Beak and Talons: Their beak is hooked, suitable for tearing prey, and they have strong, sharp talons for capturing and holding onto their catches.
  • Eyes: They have large, dark eyes, essential for their excellent vision, which is key to hunting at high speeds and from great heights.
  • Size: As with many birds of prey, females are larger than males.

Size and Weight:

  • Length: Adult Peregrine Falcons typically measure about 14 to 19 inches (36 to 48 centimeters) in length from head to tail.
  • Wingspan: They have a wingspan ranging from about 3.3 to 3.6 feet (1 to 1.1 meters).
  • Weight: The weight of Peregrine Falcons can vary, but males usually weigh between 1.2 to 2.2 pounds (0.5 to 1 kg), and females are heavier, weighing between 1.8 to 3.3 pounds (0.8 to 1.5 kg).

The physical characteristics of the Peregrine Falcon, such as its strong wings, powerful beak and talons, and keen eyesight, make it one of the most adept hunters in the bird world. These traits, along with their distinct plumage, contribute to their status as one of the most admired and recognizable birds of prey.


The Peregrine Falcon’s reproductive cycle is characterized by distinct behaviors and stages, typical of many bird species:

Mating and Nesting: Peregrine Falcons typically form monogamous pairs that may remain together for several years or even for life. During the breeding season, which varies depending on geographical location, they engage in spectacular aerial courtship displays. They usually nest on high cliffs, tall buildings, or other structures, using a scrape, which is a shallow depression in gravel or dirt, rather than building a traditional nest.

Egg Laying: The female Peregrine Falcon lays a clutch of eggs, typically consisting of 3 to 4 eggs, though it can range from 2 to 5. The eggs are laid every other day and are a creamy to brown color with darker spots.

Incubation: The incubation period lasts about 29 to 33 days. Both parents share incubation duties, but the female does the majority of it while the male provides food.

Hatching: After the incubation period, the eggs hatch. The chicks, known as eyasses, are born blind and with a thin layer of down.

Development: For the first few weeks, the female stays with the young while the male hunts and brings food back to the nest. As the eyasses grow, they develop a heavier down and then juvenile feathers, preparing them for flight.

Fledging: The young falcons fledge, or leave the nest, at around 6 to 7 weeks of age. After fledging, the parents continue to feed and teach the juveniles to hunt for several more weeks.

Independence: Juvenile Peregrine Falcons typically gain full independence from their parents a few weeks after fledging and will start to establish their own territories.

The reproductive cycle of the Peregrine Falcon, from egg laying to the independence of the young, is a critical period that requires suitable nesting sites and an abundance of food to ensure the survival and growth of the chicks. This cycle underscores the importance of habitat and prey availability for the successful reproduction and continuation of Peregrine Falcon populations.


The Peregrine Falcon, a bird of prey celebrated for its speed, has varying lifespans in the wild and in captivity, influenced by environmental factors and threats.

Lifespan in the Wild:

  • In their natural habitat, Peregrine Falcons typically have a lifespan of about 13 to 15 years. However, many falcons do not survive their first year due to natural predation, accidents, or challenges in learning to hunt effectively.
  • The oldest known wild Peregrine Falcon was recorded to live up to 19 years.

Lifespan in Captivity:

  • In captivity, Peregrine Falcons often live longer due to the absence of predators, consistent food supply, and medical care. They can live up to 20 years or more in environments such as zoos or wildlife rehabilitation centers.

Major Threats:

  • Chemical Pesticides: Historically, the use of DDT and other organochlorine pesticides severely impacted Peregrine Falcon populations, causing eggshell thinning and reproductive failure. Although many of these chemicals are now banned, residual effects can still be a threat.
  • Habitat Loss: Urban development and changes in land use can lead to habitat loss and reduced prey availability.
  • Human Disturbance: Disturbance near nesting sites by climbers, drone operators, or other human activities can lead to nesting failure.
  • Climate Change: Changing climate patterns can impact prey availability and alter habitats, potentially affecting Peregrine Falcon populations.
  • Collisions: Peregrine Falcons are at risk of collisions with man-made structures, such as buildings, wind turbines, and power lines.

Conservation efforts, including banning harmful pesticides, protecting nesting sites, and reintroduction programs, have successfully helped to recover Peregrine Falcon populations from the brink of extinction in many areas. Continuing these efforts is crucial for the ongoing protection and sustainability of this remarkable bird species.

Eating Habits

The Peregrine Falcon, known for its remarkable hunting skills and speed, has specific eating habits that reflect its status as a top predator in the avian world:


  • Birds: The primary diet of Peregrine Falcons consists of other birds. They are known to prey on a wide variety of species, ranging from small songbirds to medium-sized birds like pigeons, ducks, and shorebirds.
  • Other Prey: While birds make up the bulk of their diet, Peregrine Falcons may also hunt for small mammals, reptiles, and insects, particularly when bird prey is less available.

Hunting Technique:

  • Stooping: Peregrine Falcons are famous for their hunting stoop, a high-speed dive used to catch prey in mid-air. During this stoop, they can reach speeds of over 200 mph (322 km/h), making them the fastest animals on earth.
  • Surprise and Impact: The falcon typically hunts by flying high and then diving at high speeds to strike prey with a powerful impact, often killing it instantly. The combination of surprise, speed, and impact is a highly effective hunting strategy.
  • Aerial Pursuit: Apart from stooping, they also catch prey in flight through agile and fast aerial pursuits.


  • After catching their prey, Peregrine Falcons pluck the feathers and tear the flesh with their sharp beaks. They tend to eat at a safe perch or their nesting site.

Foraging Behavior:

  • Peregrine Falcons typically hunt during the day (diurnal), although they can also hunt at dawn or dusk.
  • They are solitary hunters and are highly territorial about their hunting grounds.

The Peregrine Falcon’s eating habits, particularly its spectacular stooping technique and preference for avian prey, underscore its adaptation to aerial hunting. This predatory behavior not only illustrates the falcon’s role as an apex predator but also its importance in the ecosystem for maintaining healthy bird populations.


The Peregrine Falcon stands out as one of the most unique and admired birds of prey for several reasons:

  1. Incredible Speed: The most striking feature of the Peregrine Falcon is its astounding speed. During its hunting dive, or stoop, it can reach speeds over 200 miles per hour (322 km/h), making it the fastest animal in the world.
  2. Global Distribution: Peregrine Falcons have one of the widest distributions of any bird species. They are found on all continents except Antarctica, inhabiting a diverse range of environments from urban skyscrapers to cliff faces.
  3. Aerial Hunting Prowess: Their hunting strategy is remarkable, involving high-altitude dives to strike prey mid-air with lethal impact. This method showcases their incredible agility, precision, and power.
  4. Adaptation to Urban Environments: Peregrine Falcons have successfully adapted to urban areas, using tall buildings as nesting sites and preying on pigeons and other city birds.
  5. Conservation Success Story: Once on the brink of extinction due to pesticide use, Peregrine Falcons have made a dramatic comeback following conservation efforts, including the banning of DDT and breeding programs.
  6. Physical Characteristics: They have a distinct appearance with a blue-gray back, barred underparts, and a black head with a distinctive “moustache” pattern.
  7. Role in Ecosystem: As apex predators, Peregrine Falcons play a crucial role in controlling bird populations, thus maintaining a healthy ecological balance.
  8. Cultural Significance: The Peregrine Falcon has a storied place in falconry and is admired and respected in many cultures for its speed, power, and majesty.

These unique attributes make the Peregrine Falcon not just an extraordinary bird of prey but also an important symbol of wildlife conservation and ecological diversity.


1. How fast does the Peregrine Falcon fly?

The Peregrine Falcon is renowned for its incredible speed, especially during its hunting dive, known as a stoop. In a stoop, the Peregrine Falcon can reach speeds of over 200 miles per hour (322 kilometers per hour), making it the fastest animal in the world. This extraordinary speed is achieved as the falcon tucks in its wings and dives in a controlled fall, using gravity to accelerate.

In level flight, when not diving, the Peregrine Falcon’s speed is considerably slower, typically ranging between 40 to 60 miles per hour (64 to 97 kilometers per hour). The combination of high-speed stooping and agile, swift flight in pursuit of prey makes the Peregrine Falcon an adept and formidable hunter in the skies.

  • Britannica, Peregrine Falcon, https://www.britannica.com/animal/peregrine-falcon, retrieved January 2024.
  • Burnie, David & Wilson, Don, Animal, Smithsonian Institute, Washington DC.
  • Hickman et al, Integrated Principle of Zoology, McGraw Hill, Boston.