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The red-legged seriema or crested cariama (''Cariama cristata'') is a mostly predatory terrestrial bird in the seriema family (Cariamidae), included in the "Gruiformes" in the old paraphyletic circumscription, but increasingly placed in a distinct order Cariamiformes (along with three extinct families). The red-legged seriema inhabits grasslands from Brazil south of the Amazon to Uruguay and northern Argentina. The area over which it occurs is estimated at 5.9 million km², though the bird is not found everywhere in this region of course. The species is absent from the Mata Atlântica and planalto uplands along the coast of Brazil.〔 ==Description== It is 75 to 90 cm (30 to 36 in) long and weighs about 1.5 kg, with a fairly long neck, tail, and legs. The plumage is medium brown above with black markings; pale brown on the head, neck, and breast; and white on the belly. The tail has a black band near the tip and a white tip. The beak and legs are red, and the eyes are yellow. Soft feathers emerge from the base of the bill to form a fan-shaped crest.〔 Many other characteristics are shared with the black-legged seriema (''Chunga burmeisteri''), the only other living member of its family. Some of these traits are discussed in the Cariamidae article. The song has a quality described as "a cross between 'the serrated bark of a young dog and the clucking of turkeys'".〔H. Burmeister, quoted and translated by Redford & Peters (1986)〕 At the loudest part of the song, the bird has its neck bent so its head is touching its back. Both members of a pair as well as young down to the age of two weeks sing; often one member of a family starts a song just as another finishes, or two sing simultaneously. The song can be heard several kilometres away; in Emas National Park, Brazil, in 1981–1982, observers often heard four red-legged seriemas or groups singing at once.〔 The full song consists of three sections: #Repeated single notes at constant pitch (1,200 to 1,300 Hz) and duration but increasing tempo #Repeated two- or three-note subphrases of slightly higher pitch with increasing tempo #Subphrases of up to 10 notes, shorter ones rising in pitch and longer ones falling, two-subphrase combinations increasing in number of notes and tempo and then decreasing in tempo. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Red-legged seriema」の詳細全文を読む スポンサード リンク
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