4036 x 6065 px | 34,2 x 51,4 cm | 13,5 x 20,2 inches | 300dpi
Data acquisizione:
29 febbraio 2012
Ubicazione:
Vancouver Island BC Britsh Columbia North America
Altre informazioni:
Adult Golden Eagles range considerably in size. The largest subspecies are among the largest eagles of the genus Aquila. Most subspecies of Golden Eagle vary in the range from 66 to 100 cm (26–40 in), wingspan can range from 150 to 240 cm (59–95 in), and weight is from 2.5 to 6.7 kg (5.5–13.4 lb). However, wild specimens of the largest subspecies in North America have been observed to be somewhat larger than that description, as the largest recorded weighed 9kg (20 lbs) and had a body length of 102 cm (40.1 in). As with many Falconiformes, females are considerably larger than males, in the case of the Golden Eagle they weigh one-fourth to one-third again as much as male birds. The plumage colours range from black-brown to dark brown, with a striking golden-buff crown and nape, which give the bird its name. The upper wings also have an irregular lighter area. Immature birds resemble adults, but have a duller more mottled appearance. Also they have a white-banded tail and a white patch at the carpal joint, that gradually disappear with every moult until full adult plumage is reached in the fifth year
