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marabou stork
The marabou stork (''Leptoptilos crumenifer'') is a large wading bird in the stork family Ciconiidae. It breeds in Africa south of the Sahara, in both wet and arid habitats, often near human habitation, especially waste tips. It is sometimes called the "undertaker bird" due to its shape from behind: cloak-like wings and back, skinny white legs, and sometimes a large white mass of "hair".
==Description==
The marabou stork is a massive bird: large specimens are thought to reach a height of and a weight of .〔Stevenson, Terry and Fanshawe, John (2001). ''Field Guide to the Birds of East Africa: Kenya, Tanzania, Uganda, Rwanda, Burundi''. Elsevier Science, ISBN 978-0856610790〕 A wingspan of was accepted by Fisher and Peterson, who ranked the species as having the largest wing-spread of any living bird. Even higher measurements of up to have been reported, although no measurement over has been verified. It is often credited with the largest spread of any landbird, to rival the Andean condor; more typically, however, these storks measure across the wings, which is about a foot less than the average Andean condor wingspan and nearly two feet less than the average of the largest albatrosses and pelicans. Typical weight is , unusually as low as , and length (from bill to tail) is . Females are smaller than males. Bill length can range from .〔〔Carwardine, ''Animal Records (Natural History Museum)''. Sterling (2008), ISBN 978-1-4027-5623-8〕 Unlike most storks, the three ''Leptoptilos'' species fly with the neck retracted like a heron.
The marabou is unmistakable due to its size, bare head and neck, black back, and white underparts. It has a huge bill, a pink gular sac at its throat, a neck ruff, and black legs and wings. The sexes are alike, but the young bird is browner and has a smaller bill. Full maturity is not reached for up to four years.
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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