The Philippine Eagle: King of the Sky

The Philippine Eagle (Pithecophaga jefferyi) is one of the most iconic birds of prey in the world. Declared the national bird of the Philippines, it is widely regarded as the largest living eagle by wingspan and body length in certain measurements — a true symbol of raw, natural power in Southeast Asia.

Physical Characteristics

Few birds command attention the way the Philippine Eagle does. Here's what sets it apart physically:

  • Length: 86–102 cm (34–40 inches)
  • Wingspan: Up to 220 cm (7.2 feet)
  • Weight: 4.7–8 kg (10–18 lbs)
  • Distinctive crest: A magnificent mane of long brown-and-white feathers frames its face, giving it a lion-like appearance
  • Eyes: Blue-grey, among the most striking of any eagle species

Its powerful talons can span up to 8 cm — longer than a human finger — and are perfectly designed for gripping large prey in dense forest canopy.

Range and Habitat

The Philippine Eagle is endemic to the Philippines, meaning it exists nowhere else on Earth. Its primary strongholds include:

  • Mindanao — the largest remaining population
  • Leyte — smaller but notable population
  • Samar — critically fragmented habitat
  • Luzon — extremely rare sightings

They inhabit old-growth and secondary tropical rainforests, typically nesting at elevations between 180 and 1,800 meters. These eagles require vast, unbroken forest territories — a single breeding pair may use up to 100 square kilometers of forest.

Diet and Hunting

Despite a historical name of "monkey-eating eagle," the Philippine Eagle is an opportunistic predator with a varied diet. Its primary prey includes:

  1. Flying lemurs (Cynocephalus volans) — the most common prey item
  2. Large bats
  3. Monitor lizards
  4. Snakes and large birds
  5. Young monkeys and small deer (less frequently)

The eagle hunts using a combination of still-hunting (perching silently to spot movement below) and contour hunting (flying low and fast through the forest understory to surprise prey).

Breeding and Reproduction

The Philippine Eagle has one of the slowest reproductive rates of any bird. A mated pair raises only one chick every two years. The nesting season typically runs from September to February, with parents sharing incubation duties over roughly 60 days. The young eagle remains dependent on its parents for up to 20 months after hatching — an extraordinarily long period that reflects the complexity of skills it must learn to survive.

Conservation Status

The Philippine Eagle is classified as Critically Endangered by the IUCN Red List. Fewer than 800 individuals are estimated to remain in the wild. The primary threats include:

  • Deforestation and habitat loss due to agriculture and logging
  • Shooting and trapping (despite legal protections)
  • Mining operations encroaching on forest territory

The Philippine Eagle Foundation leads captive breeding and forest protection programs from its center in Davao City, Mindanao. Seeing one in the wild remains a once-in-a-lifetime experience for even the most seasoned birdwatchers.

Can You See It in the Wild?

Organized birdwatching expeditions to Mount Apo, Mindanao, offer the best realistic chance of spotting this species. Guided treks through the rainforest, often lasting several days, require patience and a reliable local guide. Early mornings and calm weather provide the best conditions for a sighting.