Bald Eagle (juvenile)

Bald Eagle (juvenile)

Featured in The Woman Photographer group and
in the A Vision Of Flight group.

Juvenile Bald Eagle

The Bald Eagle (Haliaeetus leucocephalus) is a bird of prey found in North America that is most recognizable as the national bird and symbol of the United States of America. This sea eagle has two known sub-species and forms a species pair with the White-tailed Eagle. Its range includes most of Canada and Alaska, all of the contiguous United States and northern Mexico. It is found near large bodies of open water with an abundant food supply and old-growth trees for nesting.

Males and females are identical in plumage coloration. Its diet consists mainly of fish, but it is an opportunistic feeder. It hunts fish by swooping down and snatching the fish out of the water with its talons. It is sexually mature at four years or five years of age. In the wild, Bald Eagles can live up to thirty years, and often survive longer in captivity. The Bald Eagle builds the largest nest of any North American bird, up to 4 meters (13 ft) deep, 2.5 meters (8.2 ft) wide, and one tonne (1.1 tons) in weight.

The species was on the brink of extinction in the continental United States (while flourishing in much of Alaska and Canada) late in the 20th century, but now has a stable population and has been officially removed from the U.S. federal government’s list of endangered species. The Bald Eagle was officially reclassified from “Endangered” to “Threatened” on July 12, 1995 by the United States Fish and Wildlife Service. On July 6, 1999, a proposal was initiated “To Remove the Bald Eagle in the Lower 48 States From the List of Endangered and Threatened Wildlife.” It was de-listed on June 28, 2007.

The plumage of an adult Bald Eagle is evenly brown with a white head and tail. The tail is moderately long and slightly wedge-shaped. Males and females are identical in plumage coloration, however females display sexual dimorphism in that they are 25 percent larger than males. The beak, feet, and irises are bright yellow. The legs are feather-free, and the toes are short and powerful with large talons. The highly developed talon of the hind toe is used to pierce the vital areas of prey while it is held immobile by the front toes. The beak is large and hooked, with a yellow cere.

The plumage of the immature is brown, speckled with white until the fifth (rarely fourth, very rarely third) year, when it reaches sexual maturity. Immature Bald Eagles are distinguishable from the Golden Eagle in that the former has a more protruding head with a larger bill, straighter edged wings which are held flat (not slightly raised) and with a stiffer wing beat, and feathers which do not completely cover the legs.

The Bald Eagle is a large bird, with a body length ranges from 70–102 centimeters (28–40 in). Adult females have a wingspan of up to 2.44 m (96 in), while adult males may be as small as 1.68 m (66 in). Adult females weigh approximately 5.8 kilograms (13 lb), males weigh 4.1 kilograms (9.0 lb).[8] The size of the bird varies by location; the smallest specimens are those from Florida, where an adult male may barely exceed 2.3 kilograms (5.1 lb) and a wingspan of 1.8 m (5.9 ft). The largest are Alaskan birds, where large females may exceed 7.5 kilograms (17 lb) and have a wingspan of over 2.4 m (7.9 ft).

The call consists of weak chirping whistles, harsher and more shrill from young birds than adults.

The average lifespan of Bald Eagles in the wild is around 20 years, with the oldest living to be about 30. In captivity, they often live somewhat longer. In one instance, a captive individual in New York lived for nearly 50 years. As with size, the average lifespan of an eagle population appears to be influenced by its location.
Source: Wikipedia

Canon EOS 5D Mark II
Canon Zoom lens EF 100-400mm 1: 4.5-5.6 L IS
Exposure time 1/3200s
Aperture value f/5.6
ISO 400
Focal length 400 mm

Picture made at the Roofvogelboerderij in Berkel en Rodenrijs, The Netherlands

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