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Harpy eagle (Harpia harpyja)

May 12, 2020

The harpy eagle or greater harpy (Harpia harpyja) is one of the strongest birdsof prey in the world. It is fearsome for its powerful legs and sharp claws up to 15 cm long, and its strong curved and sharp beak.

It is very difficult for any animal, weighing less than 20 kilos, to be saved from her ferocious attack in the junglewhere she reigns.

It is a bird specialized in attack and is considered a top predator in the food chain (Aguiar-Silva, Sanaiotti, Luz 2014).

Index

✅ Characteristics of the Harpy Eagle

The harpy eagle is one of the four largest birds in the world, among the 292 existing species of raptors, and among the 96 that live in the Neotropics. Of all of them, it isthe one with the longest claws (Múñiz-López 2016).

Its plumage is an elegant combination of shades ranging from black to white, passing through various shades of gray.

His head and neck are gray. The chest and belly appear almost white, with light gray tones. The imposing crest, which moves when it feels in danger or is under stress, is black or very dark gray.

Harpy eagle

The bill and the upper part of the tail are black. The legs are yellowish. The head feathers, except for its crest, are lighter in color than the body feathers.

Its short wings (180 to 200 cm long), wide and rounded, allow it to fly agilely in the forest, up and down, or upside down, with great ease.

Its excellent three-dimensional view allows it to pick up moving targets of less than a meter at a distance of up to 200 meters.

✅ Harpy eagle hunting

This beautiful bird, but rapacious and dark, patiently stalks its victim for many hours to attack it. And it almost never fails in its attempts.

When it sees its prey, it will stealthily and quickly approach it at a speed that can reach up to 80 km per hour, and take it in flight with its powerful claws and lift it up, and then, on the ground, tear it apart with great precision with its strong peak, pressing it with his weight, from 8 to 9 kilos.

Whether his prey is a porcupine or a small deer or a pig, or an elusive snake or, easier still, a slow-moving sloth, which is his preferred victim, virtually nothing is safe.

✅ Feeding of the harpy

The sloth (Bradypus variegatus, Coleoopus dactylus) makes up 80-90% of its diet, but feeds on more than 70 vertebrates, including small mammals, birds, reptilesand primates.

They feed on different birds, such as herons and macaws, and small mammals, ranging from an iguanato a small deer, a porcupine or a sloth.

Harpies according to Greek mythology

The harpies were, according to Greek mythology, legendary beings in charge of taking food away from Phineus, king of Thrace, so that he would not eat as a punishment imposed by Zeus for having revealed the secrets of the gods of Olympus.

They were monsters that had the face of a woman, ears of a bear, and the body of birds of prey, with powerful and sharp claws, that brought with them the evils of the world: storms, plagues, misfortune. In short, death.

✅ Harpy eagle habitat

Being one of the most powerful in the world, the harpy eagle is a corpulent bird. It belongs to the Accipitridae family, and is found in the tropical areas of Central and South America, in the leafy forests of Panama and the Amazon.

It is difficult to see it, because it has almost disappeared, decimated by human hunting and by the continuous deforestationthat has reduced its habitat.

harpy eagle

Originally distributed in the Neotropics, from sea level to 800 meters above sea level, it has practically disappeared in Central America and southern Mexico.

A pair of this species requires hundreds of square kilometers to survive, because it is hardly a migratory bird and must feed itself with the resources available in its habitat.

Is the harpy eagle endangered?

Hence, it is very sensitive to habitat changes, especially deforestation, and environmental pollution, and is considered “vulnerable” (IUCN) or “near threatened” in the ICBP/IUN Red Book.

✅ Behavior and reproduction of the harpy eagle

It makes a large nest in the treetops. (See: Amazon trees) Its nest can measure 1.5 m, and be occupied by the couple, along with their young, for several years, and even for their entire lives.

It is a monogamous bird, and remains attached to its partner throughout its life, which can last up to 30 to 40 years.

One of its most outstanding characteristics is its marked sexual dimorphism: the female is larger than the male, both in size, weight and wingspan.

The female can measure up to 1.08 m in length and weigh about 9 kg, while the male reaches 0.96 m in length and weighs about 4 kg.

The female harpy eagle lays one to two eggs every two years. If it is about two eggs, which it incubates in its nest, it will only care for and feed the first one that hatches, leaving the other one abandoned.

The second egg is like the necessary guarantee to ensure its offspring, and it will only take care of it if the first one suffers a mishap.

Incubation takes two to two and a half months. The fledgling that develops leaves its nest around ten months of age.

The chick or young remains for months in the care of the mother, and up to two years in the territory of its parents.

Until it becomes an adult at four or five years old, and becomes independent, building its own nest together with its partner.

Around five years of age it acquires its beautiful final plumage.

Does it make any characteristic sound?

The harpy eagle is generally silent and makes almost no vocalizations. When it does, it squawks, moans, whistles. Stealth in their movements is one of their greatest attributes to be a successful bird of prey.

The harpy eagle is a colorful, powerful and corpulent bird, to the point that it has been chosen a natural monument in Argentina (1996), national bird of the Republic of Panama (2002), symbol of biodiversity in Ecuador (2002) and image of the Colombian Air Force.

harpy eagle legend

It is a symbolic bird in the Amazon worldview. A shaman negotiates huntingactions with the tutelary gods or “owners” of the animal world, transforming himself into a harpy eagle.

She can complete his ancient knowledge and even initiate him in the ability to fly.

In some Amazonian cultures, the harpy eagle represents the spirit of the air. In the shamans‘ alter ego it is the sky, just as the jaguarembodies the earth and the anacondathe water (Reina, Kensinger 1991, Beltrán 2013, Múniz-López 2016).

To color

harpy eagle coloring

Bibliography

  • Aguiar-Silva F.H., Sanaiotti T.M., Luz B.B. (2014). Food habits of the Harpy Eagle (Harpia harpyja), a top predator from the Amazonian rainforest canopy. Journal of Raptor Research, 48 (11), 24-36. (PDF)
  • Álvarez E. (1996). Biology and conservation of the Harpy Eagle in Venezuela and Panama. PhD. Dissertation. Gainesville: Florida. (PDF)
  • Aparicio K. (2003). Ecología, participación comunitaria y conservación del Águila harpía (Harpia Haryija) en la República de Panamá. Tesis de postgrado. San José: Universidad Nacional de Costa Rica. (PDF)
  • Beltrán C. (2013). En busca del jaguar: representaciones y narraciones en el Trapecio Amazónico. Tesis de grado en maestría en Estudios Amazónicos. Bogota. National university of Colombia. (PDF)
  • Collar N.J. (1989). Harpy Eagle Red Data Base. World Bird Watch, 11 (3).
  • Ferguson-Lees J., Christie D.A. (2001). Raptors of the World. Boston: Houghton Mifflin Company.
  • Guerrero M. (1997). Evolución del estado poblacional y etnozoología del águila harpía (Harpia harpyja) en el Ecuador. Thesis. Quito: Universidad Central del Ecuador.
  • Muñiz-López R. (2016). Biología y conservación del Águila Harpía (Harpia harpyja) en Ecuador. Tesis de doctorado. Facultad de Ciencias. Universidad de Alicante, España. (PDF)
  • Muñiz-López R. (2008). Revisión de la situación del Águila Harpía ( Harpia harpyja) en Ecuador. Cotinga, 29, 42-47.
  • Piana R. (2002). Distribución y abundancia del Águila Harpia (Harpia harpyja) en Perú. En: Conferencia de Rapaces Neotropicales. Simposio del Águila harpía. Panama City: The Peregrine Fund.
  • Reina R.E., Kensinger K.M. (Eds.) (1991). The gifts of birds: featherwork of native South American peoples. Philadelphia: The University Museum of Archealogy and Anthropology Philadelphia. University of Philadelphia. (Google Books)
  • Sánchez-Guillén N.A. (S.f.). Águila harpía: características, hábitat, reproducción, nutrición. Lifeder.com. lifeder.com/aguila-harpia.
  • Vargas J. de J., Whitacre D., Mosquera R., Albuquerque J., Piana R., Thiollay J.M., Matola S. (2006). Estado y distribución actual del Águila harpía (Harpia harpyja) en Centro y Sur América. Ornitología Neotropical, 17: 39-55. (PDF)

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