The great Philippine Eagle (Pithecophaga jefferyi) is one of the largest, rarest and most powerful birds in the world. It is also known as the monkey-eating eagle, Agila, manaol, garuda, malambagook (Bagobo, Manobo), the haribon or Haring Ibon (king of birds) and is endemic to forests in the Philippines.
It can grow up to 1.021 meters from the tip of its bill to its tail and its eyes are a dusky blue color. This species' nests can be found in trees 120 feet from the ground. Philippine eagle eggs are typically little smaller than a fist. Courting starts as early as July and the building of nests typically lasts from September to December. The female eagle becomes lethargic and refuses to eat eight to ten days before laying an egg. It will then lay an egg between the afternoon and twilight. Incubating the egg takes 58 to 68 days and both parents participate. After hatching, the chick remains in the nest for five months.
The most frequently heard noises made by the Philippine Eagle are loud, high-pitched whistles. Additionally, juveniles have been known to beg for food by a series of high-pitched calls.
Philippine eagles are monogamous and they bond for life. But contrary to claims that they opt to remain unpaired in the death of their mate, evidences from natural pairing techniques and data from all other raptors indicate that they take in new mates as replacement.
The food of the eagles consists mostly of large snakes, hornbills, wild cats, monkeys and flying lemurs