The culmen reportedly averages around 4.5 cm (1.8 in), with a range of 3.6 to 5 cm (1.4 to 2.0 in) and the bill length from the gape measures around 6 cm (2.4 in). The standard measurements of the species include a wing chord length of 52–72 cm (20–28 in), a tail length of 26.5–38 cm (10.4–15.0 in) and a tarsus length of 9.4–12.2 cm (3.7–4.8 in). Captive birds have been measured up to a wingspan of 2.81 m (9 ft 3 in) and a mass of 12.1 kg (27 lb) (the latter figure was for an eagle bred for the purposes of falconry which tend to be unnaturally heavy), respectively. No comprehensive range of weights are known for the largest subspecies (A. American golden eagles are typically somewhat smaller than the large Eurasian races, but a massive female that was banded and released in 2006 around Wyoming’s Bridger-Teton National Forest became the heaviest wild golden eagle on record, at 7.2 kg (16 lb). For some time, the largest known mass authenticated for a wild female was the specimen from the nominate race which weighed around 6.7 kg (15 lb) and spanned 2.55 m (8 ft 4 in) across the wings. The golden eagle ranks as the second heaviest breeding eagle in North America, Europe and Africa but the fourth heaviest in Asia. Large races are the heaviest representatives of the Aquila genus and this species is on average the seventh-heaviest living eagle species. The maximum size of this species is a matter of some debate. ![]() In the species overall, males may average around 3.6 kg (7.9 lb) and females around 5.1 kg (11 lb). ![]() japonica, males weigh 2.5 kg (5.5 lb) and females 3.25 kg (7.2 lb). daphanea) males and females weigh typically 4.05 kg (8.9 lb) and 6.35 kg (14.0 lb). This species' wingspan is the fifth largest amongst extant eagle species. ![]() The golden eagle is a very large, dark brown raptor with broad wings, ranging from 66 to 102 cm (26 to 40 in) in length and from 1.8 to 2.34 m (5 ft 11 in to 7 ft 8 in) in wingspan.
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