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Pithecophaga jefferyi

The Philippine eagle (Pithecophaga jefferyi) is a critically endangered species of eagle endemic to the Philippines' forests. It is distinguished by its brown and white plumage, shaggy crest, immense size, and powerful beak, making it one of the largest and most powerful eagles in the world. Facing severe threats from habitat loss, this magnificent bird has been declared the national bird of the Philippines.

Key Facts

  • It is the national bird of the Philippines and is depicted on the thousand-peso note.
  • It is among the largest and most powerful eagles globally, particularly in length and wing surface area.
  • The primary threat to its survival is deforestation, leading to significant habitat loss.
  • Killing a Philippine eagle is a serious criminal offense, punishable by law.
  • Its diet is opportunistic, including mammals, birds, and reptiles, with flying lemurs often being a primary food source.
  • The breeding cycle is exceptionally long, lasting two years, with a monogamous pairing for life.
Pithecophaga jefferyi
Scientific Name
Pithecophaga jefferyi
Common Names

Monkey-Eating Eagle, Great Philippine Eagle, BáNoy, áGila, Manaul, Manaol, Garuda, Tipule, Mam-Boogook, Malamboogook, HáRibon

Family
Accipitridae
Habitat

Dipterocarp Forests, Mid Montane Forests, Steep Forest Areas, Lowlands, Mountains

Geographic Distribution

Philippines

Physical Characteristics
  • Brown and white plumage
  • Shaggy, mane-like crest of long, brown feathers on the nape
  • Dark face
  • Creamy-brown nape and crown
  • Dark brown back
  • White underside and underwings
  • Heavy, yellow legs with large, powerful, dark claws
  • Prominent, large, high-arched, deep bluish-gray beak
  • Blue-gray eyes
  • Juveniles have pale fringes on upperpart feathers
Diet

Mammals, Birds, Reptiles, Monkeys, Colugos, Large Snakes, Monitor Lizards, Hornbills, Flying Lemurs, Civets, Flying Squirrels, Tree Squirrels, Flying Foxes, Rats, Mouse-Deer, Owls, Hawks, Vipers, Cobras, Domestic Fowls, Cats, Young Pigs, Small Dogs

Hunting Techniques

Still-Hunting, Perch-Hunting, Cooperative Hunting of Monkey Troops

Nesting Habits
Nests are built on emergent dipterocarp trees or other tall trees with open crowns, usually around 30 meters above the ground. The nest is a large platform made of sticks, lined with green leaves, and can be about 1.5 meters across. Eagles often reuse the same nesting site.
Lifespan
30 to 60 years in the wild; captive birds have lived up to 46 years.
Call Description
Loud, high-pitched whistles ending with inflections in pitch. Juveniles produce a series of high-pitched calls when begging for food.
Weight Kg
8
Prey Examples

Philippine Flying Lemurs, Crab-Eating Macaques, Civets, Colugos, Large Snakes, Monitor Lizards, Hornbills, Philippine Deer

Breeding Season
July
Clutch Size
Typically one egg, occasionally two
Threats

Habitat Loss Due To Deforestation, Logging, Expanding Agriculture, Mining, Pollution, Exposure To Pesticides, Poaching, Traps Set For Other Animals, Accidental Electrocution, Gunshot Wounds

About Pithecophaga jefferyi

The Philippine Eagle: Majestic Apex Predator of the Philippines

What is the Philippine Eagle?

The Philippine eagle (Pithecophaga jefferyi), also known as the monkey-eating eagle or great Philippine eagle, is a critically endangered species of eagle found exclusively in the forests of the Philippines. It is a magnificent bird characterized by its brown and white plumage, a distinctive shaggy crest, and immense size, making it one of the largest and most powerful eagles in the world. Its imposing stature and fierce hunting prowess have earned it the title of the national bird of the Philippines and a place on the thousand-peso banknote.

Habitat and Distribution

This majestic raptor is endemic to the Philippines, inhabiting the dipterocarp and mid-montane forests across four major islands: eastern Luzon, Samar, Leyte, and Mindanao. It prefers steep, forested areas, ranging from lowlands up to elevations of over 1,800 meters. The species requires extensive territories to thrive, making it highly vulnerable to the fragmentation and loss of its forest habitat.

Physical Characteristics and Behavior

The Philippine eagle is a visually striking bird with a dark face and creamy-brown nape and crown, contrasted by a dark brown back and white underparts. Its legs are heavy and yellow, equipped with powerful, dark talons, and it possesses a prominent, high-arched beak. Measuring between 86 to 102 cm in length, with a wingspan of up to 220 cm, it is one of the longest extant eagles. While generally monogamous, pairs remain together for life. The breeding cycle is exceptionally long, spanning two years, with a single chick typically hatched every alternate year.

Diet and Hunting

Initially believed to be solely a monkey predator, the Philippine eagle is, in reality, an opportunistic apex predator. Its diet is varied and depends on local prey availability, including mammals like flying lemurs, civets, and macaques, as well as birds, reptiles, and even domestic animals. Hunting techniques include still-hunting from a perch and actively searching by gliding between perches. Pairs have been observed cooperating to hunt prey.

Conservation Concerns

The Philippine eagle faces severe threats, primarily deforestation driven by logging and expanding agriculture, which drastically reduces its habitat. Other significant dangers include mining, pollution, pesticide exposure, and poaching. Killing this species is a criminal offense under Philippine law, carrying severe penalties. Conservation efforts are ongoing, with organizations working to protect its remaining habitat and breed the eagles in captivity for potential reintroduction, though the species remains critically endangered.

Source: Wikipedia ↗

Frequently Asked Questions

What is the Philippine eagle's scientific name and why was it named that?

The scientific name is Pithecophaga jefferyi. It was initially called the 'monkey-eating eagle' due to native reports of its diet, leading to its generic name derived from Greek for 'ape eater'. The species name honors Jeffery Whitehead.

What makes the Philippine eagle so large?

The Philippine eagle is typically 86 to 102 cm in length, with some specimens reaching up to 112 cm. It has a wingspan of 184 to 220 cm and a notable tarsus length, making it one of the longest extant eagles.

What does the Philippine eagle eat?

While initially believed to eat only monkeys, the Philippine eagle is an opportunistic predator. Its diet includes flying lemurs, civets, snakes, monitor lizards, large birds like hornbills, and occasionally domestic animals. Prey size can range from small bats to Philippine deer.

What are the main threats to the Philippine eagle?

The most significant threat is habitat loss due to deforestation from logging and agriculture. Other threats include mining, pollution, exposure to pesticides, and poaching, with eagles sometimes caught in traps intended for other animals.

How long does a Philippine eagle live?

The estimated lifespan for a wild Philippine eagle is between 30 to 60 years. Captive individuals have lived for 41 and 46 years, though wild birds are believed to have shorter average lifespans.

What is the conservation status of the Philippine eagle?

The Philippine eagle is listed as critically endangered by the IUCN Red List, with a declining population. It is considered one of the most endangered raptors in the world.