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翻訳と辞書　辞書検索 [ 開発暫定版 ] スポンサード リンク Brown shrike ： ウィキペディア英語版 Brown shrike The brown shrike (''Lanius cristatus'') is a bird in the shrike family that is found mainly in Asia. It is closely related to the red-backed shrike (''L. collurio'') and isabelline shrike (''L. isabellinus''). Like most other shrikes, it has a distinctive black "bandit-mask" through the eye and is found mainly in open scrub habitats, where it perches on the tops of thorny bushes in search of prey. Several populations of this widespread species form distinctive subspecies which breed in temperate Asia and migrate to their winter quarters in tropical Asia. They are sometimes found as vagrants in Europe and North America. ==Description== This shrike is mainly brown on the upper parts and the tail is rounded. The black mask can be paler in winter and has a white brow over it. The underside is creamy with rufous flanks and belly. The wings are brown and lack any white "mirror" patches. Females tend to have fine scalloping on the underside and the mask is dark brown and not as well marked as in the male. The distinction is not easy to use in the field but has been tested with breeding birds in Japan where the female can be identified from the presence of a brood patch. The use of multiple measurements allows discrimination of the sex of about 90% of the birds. Subspecies ''lucionensis'' has a grey crown shading into the brown upperparts and the rump appears more rufous than the rest of the upper back. The tail is more brownish and not as reddish as in the red-backed shrike. Younger birds of ''lucionensis'' have a brown crown and lack the grey on the head. Supspecies ''superciliosus'' has a broad white supercilium and a richer reddish crown. The tail is redder and tipped in white. A number of confusing forms are known from central Asia where the populations of ''cristatus'', ''isabellinus'' and ''collurio'' overlap. The taxonomy has been in a state of flux and some forms such as ''phoenicuroides'' formerly considered as subspecies of ''L. cristatus'' have been moved to the species ''L. isabellinus''.〔 Subspecies ''lucionensis'' has been recorded interbreeding with ''superciliosus'' in Ishikawa, Japan while ''superciliosus'' has interbred with ''Lanius tigrinus'' in central Japan. 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「Brown shrike」の詳細全文を読む スポンサード リンク 翻訳と辞書 : 翻訳のためのインターネットリソース Copyright(C) kotoba.ne.jp 1997-2016. All Rights Reserved.