eagle

 

common name for large predatory birds of the family Falconidae (hawk family), found in all parts of the world. Eagles are similar to the buteos, or buzzard hawks, but are larger both in length and in wingspread (up to 7¹/₂ ft/228 cm) and have beaks nearly as long as their heads. They are solitary birds, said to mate for life. The nest, or aerie, of twigs and sticks is built at a vantage point high in a tree or on a cliff in a permanent feeding territory and is added to year after year, the refuse of the previous nests decomposing beneath the new additions. Nests can become enormous, measuring up to ten feet across and weighing well over 1,000 pounds. The eaglets (usually two) do not develop adult markings until their third year, when they leave parental protection and seek their own mates and territories.

The American bald (in the sense of white, as in piebald), or white-headed, eagle (Haliaetus leucocephalus) is found in all parts of North America near water and feeds chiefly on dead fish (sometimes robbing the osprey's catch) and rodents. It is dark brown with white head, neck, and tail plumage. The northern species (found chiefly in Canada) is slightly larger than the southern, which ranges throughout the United States. With only 417 known breeding pairs in the 48 contiguous states in 1963, the bald eagle population was dwindling alarmingly; a decade later they were placed on the endangered species list. In one of the greatest success stories in species recovery, conservation methods such as the banning of DDT and the prohibition against eagle hunting had by the beginning of the 21st cent. increased the breeding population in the lower 48 states to some 5,000 pairs. In 1995 the bald eagle was removed from endangered status, and in 2007, when there were nearly 10,000 breeding pairs in the lower 48, it was removed from threatened status. The bald eagle (and golden eagle) continue to be protected by federal law.

The golden, or mountain, eagle (genus Aquila—whence aquiline, meaning eaglelike) is widespread in the Northern Hemisphere, in the United States found mostly in the West. Unlike the bald eagle, it is an aggressive predator. In Asia it is trained to hunt small game (see falconry). The adult is sooty brown with tawny head and neck feathers; unlike those of the bald eagle, its legs are feathered to the toes. The gray and Steller's sea eagles (also in the genus Haliaetus) are native to colder areas of the Northern Hemisphere; the king or imperial eagle to S Europe and Asia; and the rare monkey-eating eagle to the Philippines. The harpy, or harpy eagle (Thrasyaetus harpyia), of Central and South America, the largest (38 in./95 cm long) of the hawks, eats macaws and sloths. It was named for the winged monsters of Greek myth and was called “winged wolf” by the Aztecs. New Zealand's extinct Haast's eagle, which had a 10-ft (3-m) wingspan and weighed 30% to 40% more than the harpy, was the top predator in the archipelago's ecosystem prior to the arrival of humans.

Eagles—impressive both in size and for their fearsome beauty—have long been symbols of royal power and have appeared on coins, seals, flags, and standards since ancient times. The eagle was the emblem of one of the Ptolemies of Egypt and was borne on the standards of the Roman armies and of Napoleon's troops. The American bald eagle became the national emblem of the United States by act of Congress in 1782. In folklore the eagle's ability to carry off prey, including children (e.g., the legend of Ganymede), has been exaggerated; even the powerful golden eagle can lift no more than 8 lb (3.6 kg).

Eagles are classified in the phylum Chordata, subphylum Vertebrata, class Aves, order Falconiformes, family Accipitridae.

Eagle
White-tailed Eagle in flight
Scientific classification
Kingdom: Animalia Phylum: Chordata Class: Aves Order: Falconiformes Family: Accipitridae
Genera
Several, see below.

Eagles are large birds of prey which mainly inhabit Eurasia and Africa. Outside this area, just two species (the Bald and Golden Eagles) are found in North America north of Mexico, with a few more species in Central and South America, and three in Australia.

They are members of the bird order Falconiformes (or Accipitriformes, according to alternative classification schemes), family Accipitridae, and belong to several genera which are not necessarily closely related to each other in any sort of way.

Eagles are differentiated from other birds of prey mainly by their larger size, more powerful build, and heavier head and bill. Even the smallest eagles, like the Booted Eagle (which is comparable in size to a Common Buzzard or Red-tailed Hawk), have relatively longer and more evenly broad wings, and more direct, faster flight. Most eagles are larger than any other raptors apart from the vultures.

Like all birds of prey, eagles have very large powerful hooked beaks for tearing flesh from their prey, strong legs, and powerful talons. They also have extremely keen eyesight to enable them to spot potential prey from a very long distance.[1] This keen eyesight is primarily contributed by their extremely large pupils which cause minimal diffraction (scattering) of the incoming light.

In Britain before 1678, Eagle referred specifically to the Golden Eagle, the other native species, the White-tailed Eagle, being known as the Erne. The modern name "Golden Eagle" for Aquila chrysaetos was introduced by the naturalist John Ray.

Eagles build their nests, called eyries, in tall trees or on high cliffs. Many species lay two eggs, but the older, larger chick frequently kills its younger sibling once it has hatched.

Eagles are sometimes used in falconry. They appear prominently in myth and literature. In the Old World, such references are commonly to the Golden Eagle (or possibly closely related species found in warmer climates).

Taxonomy

Major new research into eagle taxonomy suggests that the important genera Aquila and Hieraaetus are not composed of nearest relatives, and it is likely that a reclassification of these genera will soon take place, with some species being moved to Lophaetus or Ictinaetus.^[1]

• Bonelli's Eagle, the Booted Eagle and the Little Eagle have been moved from Hieraaetus to Aquila.
• Either the Greater Spotted Eagle and Lesser Spotted Eagle should move from Aquila to join the Long-crested Eagle in Lophaetus, or, perhaps better, all three of these species should move to Ictinaetus with the Black Eagle.
• The Steppe Eagle and Tawny Eagle, once thought to be conspecific, are not even each other's nearest relatives.

Species

FAMILY ACCIPITRIDAE

• Subfamily Buteoninae - hawks (buzzards), true eagles and sea-eagles
  • Genus Geranoaetus
    • Black-chested Buzzard-eagle, Geranoaetus melanoleucus
  • Genus Harpyhaliaetus
    • Crowned Solitary Eagle, Harpyhaliaetus coronatus
    • Solitary Eagle, H. solitarius
  • Genus Morphnus
    • Crested Eagle, Morphnus guianensis

• • Genus Harpia
    • Harpy Eagle, Harpia harpyja
  • Genus Pithecophaga
    • Philippine Eagle, Pithecophaga jefferyi
  • Genus Harpyopsis
    • New Guinea Eagle, Harpyopsis novaeguineae
  • Genus Oroaetus
    • Black-and-chestnut Eagle, Oroaetus isidori
  • Genus Spizaetus
    • Cassin's Hawk-eagle, Spizaetus africanus
    • Changeable Hawk-eagle, S. cirrhatus
    • Mountain Hawk-eagle, S. nipalensis
    • Blyth's Hawk-eagle, S. alboniger
    • Javan Hawk-eagle, S. bartelsi
    • Sulawesi Hawk-eagle, S. lanceolatus
    • Philippine Hawk-eagle, S. philippensis
    • Wallace's Hawk-eagle, S. nanus
    • Black Hawk-eagle, S. tyrannus
    • Ornate Hawk-eagle, S. ornatus
    • Black-and-white Hawk-eagle, S. melanoleucus
  • Genus Lophaetus
    • Long-crested Eagle, Lophaetus occipitalis - possibly belongs in Ictinaetus
  • Genus Stephanoaetus
    • Crowned Hawk-eagle, Stephanoaetus coronatus
  • Genus Polemaetus
    • Martial Eagle, Polemaetus bellicosus
  • Genus Hieraaetus
    • Ayres' Hawk-eagle, Hieraaetus ayresii
    • Rufous-bellied Eagle, H. kienerii
    • African Hawk Eagle, H. spilogaster

• • Genus Harpagornis (extinct)
    • Haast's Eagle, Harpagornis moorei - possibly belongs in either Hieraaetus or Aquila^[2]
  • Genus Aquila
    • Bonelli's Eagle, Aquila fasciata - formerly Hieraaetus fasciatus
    • Booted Eagle, A. pennata - formerly Hieraaetus pennatus
    • Little Eagle, A. morphnoides
    • Golden Eagle, A. chrysaetos
    • Eastern Imperial Eagle, A. heliaca
    • Spanish Imperial Eagle A. adalberti
    • Steppe Eagle, A. nipalensis
    • Tawny Eagle, A. rapax
    • Greater Spotted Eagle, A. clanga - to be moved to Lophaetus or Ictinaetus
    • Lesser Spotted Eagle, A. pomarina - to be moved to Lophaetus or Ictinaetus
    • Indian Spotted Eagle, A. hastata - to be moved to Lophaetus or Ictinaetus
    • Verreaux's Eagle, A. verreauxii
    • Gurney's Eagle, A. gurneyi
    • Wahlberg's Eagle, A. wahlbergi
    • Wedge-tailed Eagle, A. audax
  • Genus Ictinaetus
    • Black Eagle, Ictinaetus malayensis
  • Genus Haliaeetus
    • White-tailed Eagle, Haliaeetus albicilla
    • Bald Eagle, H. leucocephalus
    • Steller's Sea-eagle, H. pelagicus
    • African Fish-eagle, H. vocifer
    • White-bellied Sea-eagle, H. leucogaster
    • Sanford's Fish-eagle, H. sanfordi
    • Madagascar Fish-eagle, H. vociferoides
    • Pallas' Sea-eagle, H. leucoryphus
  • Genus Ichthyophaga
    • Lesser Fish-eagle, Ichthyophaga humilis
    • Grey-headed Fish-eagle, I. ichthyaetus

• Subfamily Circaetinae: snake-eagles
  • Genus Terathopius
    • Bateleur, Terathopius ecaudatus
  • Genus Circaetus
    • Short-toed Eagle, Circaetus gallicus
    • Black-chested Snake-eagle, C. pectoralis
    • Brown Snake-eagle, C. cinereus
    • Fasciated Snake-eagle, C. fasciolatus
    • Banded Snake-eagle, C. cinerascens
  • Genus Spilornis
    • Crested Serpent-eagle, Spilornis cheela
    • Nicobar Serpent-eagle, S. minimus
    • Mountain Serpent-eagle,S. kinabaluensis
    • Sulawesi Serpent-eagle, S. rufipectus
    • Philippine Serpent-eagle, S. holospilus
    • Andaman Serpent-eagle, S. elgini
  • Genus Eutriorchis
    • Madagascar Serpent-eagle, Eutriorchis astur

Eagles in culture

The word

The modern English name of the bird is derived from the Latin term aquila by way of the French Aigle. The Latin aquila may derive from the word aquilus, meaning dark-colored, swarthy, or blackish, as a description of the eagle's plumage; or from Aquilo, the Latin version of Greek Boreas, or north wind.

Old English used the term Earn, related to Scandinavia's Ørn / Örn. The etymology of this word is related to Greek ornos, literally meaning "bird". In this sense, the Eagle is the Bird with a capital B.

Eagles as national symbols

The eagle has been used by many nations as a national symbol, depicting power, beauty and independence.

• Persian Empire. The symbol of Persian Army was an Eagle
• Arabic world. Many Arabic states and organisations use eagles as symbols, e.g. the PLO, Egypt, Syria, Iraq and Yemen.
• Czech Republic. The Czech Republic integrates three historical parts: Bohemia (with a double-tailed lion in the emblem), Moravia and Silesia (both with female eagles in their emblems - red-and-white chequered and black).
• Hellenistic Egypt. The Ptolemaic rulers of Egypt used it as their seal.
• First French Empire. Napoleon Bonaparte used the Roman Golden Eagle as the symbol of his new French empire.
• Ghana. Two eagles are part of the coat of arms of Ghana.
• Indonesia. An eagle called garuda carrying a shield on its neck and a banner on its feet.
• Mexico. The bird on the Mexican coat of arms and flag is a Golden Eagle.
• Moldova. An eagle is part of the coat of arms and flag of Moldova.
• Nigeria, The eagle is part of the Coat of Arms of Nigeria and the Seal of the President of Nigeria.
• The Philippines. The endangered Philippine Eagle is the national bird of the Philippines.
• Poland. A white eagle on a red field is the coat of arms of Poland.
• Romania. The eagle is also part of the coat of arms of Romania
• Rome. The Romans used it on the standards of their armies. From this derives:
  • The late Byzantine Empire chose a two-headed golden eagle as its symbol. It is popularly that one head symbolised ancient Rome, and the other head symbolised "new Rome" at Constantinople. From this derives:
    • Albania. The two-headed eagle is the emblem of "Shqipëria" or Land of the Eagles, which is known in English as Albania (see The Tale of the Eagle for the legendary origin of the name)
    • Russian Empire. After the fall of Constantinople, the Russian Empire took the two-headed eagle as its own symbol.
  • Charlemagne and Holy Roman Empire. After his crowning as the new Roman Emperor, Charlemagne adopted the ancient Roman eagle as his own symbol. The Holy Roman Empire born of his kingdom took the eagle, but the Habsburgs replaced the golden eagle by an imperial eagle. From this derives:
    • Austria. The Austrian Empire had a two-headed eagle as its symbol. After the abolition of Austria-Hungary, Austria took as its symbol a one-headed eagle in the modern coat of arms of Austria.
    • Germany and Prussia. Prussia, and later Germany have used a black eagle as their national symbol.
    • Spain. The "Catholic Kings", Isabella and Ferdinand, used the Golden Eagle as a part of the royal shield. The eagle was on the Spanish shield until 1978.
• Serbia/Montenegro. The Two-headed eagle is the emblem of Serbia, Montenegro, and Serbia and Montenegro.
• The Seljuk Turks and Ottoman Turks used a double-headed eagle as coats-of-arms.
• USA. The United States has adopted the North American Bald Eagle as its national emblem. Although the Golden Eagle is found in North America, U.S. references to an unspecified "eagle" are often to the Bald Eagle, especially in an emblematic context. However, a few U.S. coins have shown the Golden Eagle (recognizable because the feathering on its legs extends to the base of the toes);^{[3] [4]}

Eagles as religious objects

In Jewish tradition the eagle is a symbol of greatness, and leaders such as the medieval sage Maimonides and the Lubavitcher Rebbe, Rabbi Menachem M. Schneerson, have been referred to by their peers and students as "The Great Eagle". The Torah compares God Himself to an eagle in Deuteronomy, 32.11-12. "As an eagle awakens its nest, hovering over its fledglings, it spreads its wings, taking them and carrying them on its pinions. [So] the Lord guided them [the Israelites] alone, and there was no alien deity with Him."

Eagle lecterns are very common in Christian churches and cathedrals. The eagle is the symbol used to depict John the Apostle, whose writing most clearly witnesses the light and divinity of Christ. In art, John, as the presumed author of the Gospel, is often depicted with an eagle, which symbolizes the height he rose in the first chapter of his gospel. See Names of John.

The eagle is a sacred bird in some cultures and the feathers of the eagle are central to many religious and spiritual customs, especially amongst Native Americans in the United States and First Nations in Canada, as well as among many of the peoples of Meso-America. Some Native American peoples revere eagles as sacred religious objects and the feathers and parts of Bald and Golden Eagles are often compared to the Bible and crucifix. Eagle feathers are often used in various ceremonies and are used to honor noteworthy achievements and qualities such as exceptional leadership and bravery. In the cultures of the Northwest Coast, Eagle is also a supernatural being and also the ancestor and features in the heraldic crests of important clans known as totem poles.

The Moche people of ancient Peru worshipped the animal and often depicted eagles in their art. ^[5]

Despite modern and historic Native American practices of giving eagle feathers to non-indigenous people and also members of other tribes who have been deemed worthy, current United States eagle feather law stipulates that only individuals of certifiable Native American ancestry enrolled in a federally recognized tribe are legally authorized to obtain eagle feathers for religious or spiritual use. In Canada, poaching of eagle feathers for the booming U.S. market has sometimes resulted in the arrests of First Nations person for the crime.^{[citation needed]}

Eagles as organizational symbols

• Australia. The Royal Australian Air Force uses the Wedge-tailed Eagle on its coat of arms. There is also an Australian Rules Football club called the West Coast Eagles, and an NRL Football club called the Manly Sea Eagles.
• China. Flying eagle is the logo of Shatin Pui Ying College in Hong Kong. In this school, an award is called Flying Eagle Award with the eagle badges as prizes.
• Greece. The double-headed eagle is the emblem of the Greek sport clubs AEK (black eagle with open wings on yellow background) and PAOK (black eagle with closed wings on white background, as a symbol of mourning). It is a symbol of the clubs' origins, since both clubs were founded by Greeks who fled to Greece from Constantinople in 1922-23. The eagle itself is derived from the later version of the Roman Eagle, the Byzantine- or East Roman eagle.
• Italy. The Roman eagle is the symbol of the Roman sports club S.S. Lazio.
• Nigeria. The Nigeria Football Association, the nation's football (soccer) governing body, has a green eagle perched on a football as its organisational symbol and logo. The Nigerian national football team is known as the 'Super Eagles', the under-20 youth team as the 'Flying Eagles', and the under-17 national side as the 'Golden Eaglets'. They all have an eagle as their symbol.
• Portugal. Eagle is the symbol of the Portuguese football team Sport Lisboa e Benfica.
• Turkey. Black Eagles is used for the Turkish sports club Beşiktaş J.K..
• USA. Eagles are a common motif for American companies and organizations seeking association with a national identity. A few examples are the United States Postal Service, the Constitution Party, and the name of the highest rank in the Boy Scouts of America. Among the sports teams whose mascot is an eagle, the only one in a major league of a major sport (by U.S. standards) is the Philadelphia Eagles (American football). The U.S. international rugby teams are also known as the The Eagles.

Eagles as coroporate symbols

• Italy The eagle is the symbol of Moto Guzzi, the motorcycle manufacturer. Carlo Guzzi, and Guiseppi Parodi, along with Gionvanni Ravelli had envisioned starting a motorcycle company after WWI ended. Parodi and Guzzi went on to create Moto Guzzi by themselves, as Ravelli was killed in a plane crash just days after the end of the war. To commemorate Ravelli, Parodi and Guzzi chose as the emblem of their nascent company, the symbol that represented their commeraderie and their common passion for flight: the insignia of the Italian Air Corp, l’aquila ad ali spiegate, the winged eagle

References

• Splitting headaches? Recent taxonomic changes affecting the British and Western Palaearctic lists - Martin Collinson, British Birds vol 99 (June 2006), 306-323
• Bruguier, Leonard.A Warrior's Eagle Feather

Persian Empire: the symbol of the Persian army was and eagle

See also

• Eagle (heraldry)

External links

• PBS Nature: Eagles
• Eagle videos on the Internet Bird Collection
• Eagle photos - including chick in nest
• Web of the Conservation Biology Team-Bonelli's Eagle, of the University of Barcelona
• Eagle Conservation Alliance (ECA)pdc:Adler

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