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black crowned crane
The black crowned crane (''Balearica pavonina'') is a bird in the crane family Gruidae.
It occurs in dry savannah in Africa south of the Sahara, although in nests in somewhat wetter habitats. There are two subspecies: ''B. p. pavonina'' in the west and the more numerous ''B. p. ceciliae'' in east Africa.
This species and the closely related grey crowned crane, ''B. regulorum'', which prefers wetter habitats for foraging, are the only cranes that can nest in trees. This habit, amongst other things, is a reason the relatively small ''Balearica'' cranes are believed to closely resemble the ancestral members of the Gruidae. It is about 1 m (3.3 ft) long, has a 1.87 m (6.2 ft) wingspan and weighs about 3.6 kg (8 lbs).
Like all cranes, the black crowned crane eats insects, reptiles, and small mammals. It is endangered, especially in the west, by habitat loss and degradation.
==References==
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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