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Monday, 6 October 2014
Thursday, 28 February 2013
The White-bellied Sea Eagle
The White-bellied Sea Eagle (Haliaeetus leucogaster), also
known as the White-breasted Sea Eagle, is a large diurnal bird of prey in the
family Accipitridae. Originally described by Johann Friedrich Gmelin in 1788,
it is closely related to Sanford's Sea Eagle of the Solomon Islands, and the
two are considered a superspecies. A distinctive bird, the adult White-bellied
Sea Eagle has a white head, breast, under-wing coverts and tail.
The upper
parts are grey and the black under-wing flight feathers contrast with the white
coverts. The tail is short and wedge-shaped as in all Haliaeetus species. Like
many raptors, the female is slightly larger than the male, and can measure up
to 90 cm (36 in) long with a wingspan of up to 2.2 m (7 ft), and weigh 4.5 kg
(10 lb). Immature birds have brown plumage, which is gradually replaced by
white until the age of five or six years. The call is a loud goose-like
honking.
Resident from India and Sri Lanka through Southeast Asia to
Australia on coasts and major waterways, the White-bellied Sea Eagle breeds and
hunts near water, and fish form around half of its diet. Opportunistic, it
consumes carrion and a wide variety of animals. Although rated of Least Concern
globally, it has declined in parts of southeast Asia such as Thailand, and
southeastern Australia. It is ranked as Threatened in Victoria and Vulnerable
in South Australia and Tasmania. Human disturbance to its habitat is the main
threat, both from direct human activity near nests which impacts on breeding
success, and from removal of suitable trees for nesting. The White-bellied Sea
Eagle is revered by indigenous people in many parts of Australia, and is the
subject of various folk tales throughout its range.
Tuesday, 17 July 2012
Sea eagle
A sea eagle (also called erne or ern, mostly in reference to the white-tailed eagle) is any of the birds of prey in the genus Haliaeetus in the bird of prey family Accipitridae.
Sea eagles vary in size, from the Sanford's fish eagle averaging 2–2.7 kg to the huge Steller's sea eagle weighing up to 9 kg. At up to 6.9 kg, the white-tailed eagle is the largest eagle in Europe. Bald eagles can weigh up to 6.3 kg, making them the largest eagle native to North America. The white-bellied sea eagle can weigh up to 3.4 kg. Their diets consist mainly of fish and small mammals.
Sea eagles vary in size, from the Sanford's fish eagle averaging 2–2.7 kg to the huge Steller's sea eagle weighing up to 9 kg. At up to 6.9 kg, the white-tailed eagle is the largest eagle in Europe. Bald eagles can weigh up to 6.3 kg, making them the largest eagle native to North America. The white-bellied sea eagle can weigh up to 3.4 kg. Their diets consist mainly of fish and small mammals.
Monday, 5 September 2011
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