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The Giant Philippine Eagle |

Writer Emily Sparks

ReIt Is Considered the largest eagle in the world in terms of length and wing surface.

Only the harpy and Steller’s sea eagles outweigh the Philippine eagle in terms of mass.

About The Giant Philippine Eagle

In Philippine mountain forests, locals name it the ‘monkey-eating eagle,’ a giant bird that hunts macaques.

Although monkey predation is infrequent, the massive Philippine eagle, boasting a 7ft wingspan, seems like a creature from folklore.

Facts Of The Giant Philippine Eagle

The Philippine eagle, weighing between 3.6 and 8.2 kilograms (8-18 lb), displays distinct physical features and hence named the largest eagle in the world.

Its back plumage consists of long, brown feathers with a white underside, encompassing its face.

These colors complement its striking blue-grey eyes, which offer eight times better vision than humans.

The eagle also boasts a high-arching, bluish beak and sharp, powerful talons that aid in hunting.

As apex predators, giant Philippine eagles play a crucial role in maintaining the balance of the rainforest ecosystem.

They regulate populations of mammals, lizards, and birds.

Their varied diet includes flying lemurs, squirrels, fruit bats, rats, snakes, monitor lizards, owls, and hornbills.

Although they occasionally consume monkeys, local macaques pose a potential danger as they are of similar size to the eagles.

Historically labeled as purely vicious, giant Philippine eagles defy this characterization in their breeding customs.

Reproduction Of The Giant Philippine Eagle

They form lifelong pairs, with females maturing at five years and males at seven.

Courtship begins with the male chasing the female in the air and presenting his talons.

If the female is receptive, she responds by revealing her talons.

Once both claws are mutually approved, they collaborate in building their nest.

Each eagle contributes materials to complete the nest, enabling copulation to commence.

Females lay one egg every two years, and both parents take turns incubating it for about sixty days.

During the first few months of the eaglet’s life, male eagles handle most of the hunting duties while the female remains with the young.

Both parents nurture the offspring until it can fend for itself before considering another breeding cycle.

The most significant threats to the species are deforestation and habitat loss.

With an infrequent breeding cycle and each Philippine eagle pair requiring 4,000-11,000 hectares of territory to thrive, their population is rapidly declining.

As the national bird of the Philippines, awareness of the eagle’s plight is growing, and conservation projects aim to protect its habitat.

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Or for more information on the bioregions of Indomayala, you can explore them using One Earth’s interactive Navigator.

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