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Thrushes make up the Turdidae, a family of passerine birds that occurs worldwide. ==Characteristics== Thrushes are plump, soft-plumaged, small to medium-sized birds, inhabiting wooded areas, and often feed on the ground. The smallest thrush may be the forest rock thrush, at and . However, the shortwings, which have ambiguous alliances with both thrushes and Old World flycatchers, can be even smaller. The lesser shortwing averages . The largest thrush is the blue whistling thrush, at and . The great thrush is similar in length, but less heavily built.〔''Thrushes'' by Peter Clement. Princeton University Press (2001), ISBN 978-0-691-08852-5.〕 Most species are grey or brown in colour, often with speckled underparts. They are insectivorous, but most species also eat worms, land snails, and fruit. Many species are permanently resident in warm climates, while others migrate to higher latitudes during summer, often over considerable distances. Thrushes build cup-shaped nests, sometimes lining them with mud. They lay two to five speckled eggs, sometimes laying two or more clutches per year. Both parents help in raising the young.〔 The songs of some species, including members of the genera ''Catharus'', ''Myadestes'', Sialia and Turdus'', are considered to be among the most beautiful in the avian world.〔http://forums.gardenweb.com/forums/load/woodland/msg051859363475.html〕〔http://rogcad.com/hermitthrush/index.htm〕 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「Thrush (bird)」の詳細全文を読む スポンサード リンク
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