The Philippine eagle, also known as the monkey-eating eagle 

The Philippine eagle, also known as the monkey-eating eagle or great Philippine eagle, is an eagle of the family Accipitridae endemic to forests in the Philippines. It has brown and white-coloured plumage, and a shaggy crest, and generally measures 86 to 102 cm in length and weighs 4.04 to 8.0 kg. It is considered the largest of the extant eagles in the world in terms of length and wing surface, with Steller’s sea eagle and the harpy eagle being larger in terms of weight and bulk. Among the rarest and most powerful birds in the world.

Philippine eagle has been declared the Philippine national bird. It is critically endangered, mainly due to massive loss of habitat resulting from deforestation in most of its range. Killing a Philippine eagle is punishable under Philippine law up to 12 years in prison and heavy fines. The Philippine eagle’s nape is adorned with long, brown feathers that form a shaggy, manelike crest. The eagle has a dark face and a creamy-brown nape and crown. The back of the Philippine eagle is dark brown, while the underside and underwings are white. The heavy legs are yellow, with large, powerful, dark claws, and the prominent, large, high-arched, deep beak is a bluish-gray. The eagle’s eyes are blue-gray. Juveniles are similar to adults except their upperpart feathers have pale fringes. The maximum reported weight is surpassed by two other eagles the harpy and Steller’s sea eagles and the wings are shorter than large eagles of open country such as the white-tailed eagle, Steller’s sea eagle, martial eagle, or wedge-tailed eagle, but are quite broad. The tarsus of the Philippine eagle ties as the longest of any eagle from 12.2 to 14.5 cm long, which is about the same length as that of the much smaller but relatively long-legged New Guinea eagle. The very large but laterally compressed bill rivals the size of Steller’s sea eagle’s as the largest bill for an extant eagle. Its bill averages 7.22 cm (2.84 in) in length from the gape. The tail is fairly long at 42–45.3 cm while another source lists a tail length of 50 cm.

The Philippine eagle is endemic to the Philippines and can be found on four major islands: eastern Luzon, Samar, Leyte, and Mindanao. The largest numbers of eagles reside on Mindanao, with between 82 and 233 breeding pairs. Only six pairs are found on Samar, two on Leyte, and a few on Luzon. It can be found in Northern Sierra Madre National Park on Luzon and Mount Apo,  Mount Malindang, and Mount Kitanglad National Parks on Mindanao. This eagle is found in dipterocarp and midmontane forests, particularly in steep areas. Its elevation ranges from the lowlands to mountains of over 5,900 feet. Only an estimated 9,220 killo meter of old-growth forest remain in the bird’s range. However, its total estimated range is about 146,000 killo meter.

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