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Bird ringing is the term used in the UK and in some other parts of Europe, while the term bird banding is more often used in the U.S. and Australia. [49] bird strike The impact of a bird or birds with an airplane in flight. [50] body down The layer of small, fluffy down feathers that lie underneath the outer contour feathers on a bird's body. [51]
Although, superficially, they resemble other diving birds such as loons and coots, they are most closely related to flamingos, as supported by morphological, molecular and paleontological data. Many species are monogamous and are known for their courtship displays, with the pair performing synchronized dances across the water's surface.
This is a list of bird species recorded in South America. South America is the "Bird Continent": It boasts records of 3492 species, more than any other. (Much larger Eurasia is second with 3467.) Colombia's list alone numbers 1910 confirmed species, and both Brazil's and Peru's confirmed lists also exceed 1860.
Plunge-diving is a special form of foraging that involves a transition from air to water. [citation needed] Plunge-diving birds are notable for their beaks, necks, and morphing wings. Plunge-diving birds generally have a higher beak angle ratio than others. [5] Beak angle ratio is defined as the top angle divided by the side angle.
The deployment of capillary depth recorders, which record the maximum dive depth undertaken by a bird, has shown that while some species, such as the wandering albatross, do not dive deeper than a metre, some species, such as the light-mantled albatross, have a mean diving depth of almost 5 m (16 ft) and can dive as deep as 12.5 m (41 ft). [34]
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Divers Alert Network (DAN) is a group of not-for-profit organisations dedicated to improving diving safety for all divers. It was founded in Durham, North Carolina, in 1980 at Duke University to provide 24/7 telephone diving medical assistance.
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