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Eurasian cranes in a V formation (video) Birds flying in V formation. A V formation is a symmetric V- or chevron-shaped flight formation.In nature, it occurs among geese, swans, ducks, and other migratory birds, improving their energy efficiency, while in human aviation, it is used mostly in military aviation, air shows, and occasionally commercial aviation.
This is a list of the fastest flying birds in the world. A bird's velocity is necessarily variable; a hunting bird will reach much greater speeds while diving to catch prey than when flying horizontally. The bird that can achieve the greatest airspeed is the peregrine falcon (Falco peregrinus), able to exceed 320 km/h (200 mph) in its dives.
The bird is pale grey and is easily distinguished from any of the other grey geese of the genus Anser by the black bars on its head. It is also much paler than the other geese in this genus. In flight, its call is a typical goose honking. A mid-sized goose, it measures 71–76 cm (28–30 in) in total length and weighs 1.87–3.2 kg (4.1–7.1 lb).
Adult geese are often seen leading their goslings in a line with one parent at the front, and the other at the back of the "parade". Like most geese, the cackling goose is naturally migratory, with their overwintering range being most of the U.S. (locally in Western Canada, the West Coast of the U.S. and northern Mexico). The calls overheard ...
Canada geese range from 75 to 110 cm (30 to 43 in) in length and have a 127–185 cm (50–73 in) wingspan. [16] Among standard measurements, the wing chord can range from 39 to 55 cm (15 + 1 ⁄ 2 to 21 + 1 ⁄ 2 in), the tarsus can range from 6.9 to 10.6 cm (2 + 11 ⁄ 16 to 4 + 3 ⁄ 16 in) and the bill can range from 4.1 to 6.8 cm (1 + 5 ...
Anser albifrons – Greater White-fronted Goose – XC96532. Greater white-fronted geese are 64–81 cm (25–32 in) in length, have a 130–165 cm (51–65 in) wingspan, and weigh 1.93–3.31 kg (4 lb 4 oz – 7 lb 5 oz). [ 4 ][ 5 ] They have bright orange legs and mouse-coloured upper wing-coverts. They are smaller than greylag geese.
The flying geese paradigm (Japanese: 雁行形態論, Hepburn: Gankō keitai-ron) is a view of Japanese scholars regarding technological development in Southeast Asia which sees Japan as a leading power. It was developed in the 1930s, but gained wider popularity in the 1960s, after its author, Kaname Akamatsu, published his ideas in the Journal ...
The spur-winged goose is a common bird of African wetlands. Perhaps the main threat to the species is development and destruction of wetland habitats and unregulated hunting. A counting survey of the population in western Africa wetlands from Senegal to Chad in early 1977 produced a count of 10,000 geese, mostly being found in the Niger basin. [6]
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