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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 Sierra Nevada bighorn sheep ： ウィキペディア英語版 Sierra Nevada bighorn sheep Sierra Nevada bighorn sheep (''Ovis canadensis sierrae'') is a genetically distinct subspecies of bighorn sheep unique to the Sierra Nevada mountains of California. Sierra Nevada bighorn sheep were listed as a federally endangered subspecies in 2000. Today, about 500 Sierra bighorn remain in the wild.〔(【引用サイトリンク】title=Sierra Nevada Bighorn Sheep Recovery Program )〕 ==Physical characteristics== Sierra bighorn range in color from white to dark brown, with a white rump and dark tail.〔(【引用サイトリンク】publisher=Sierra Nevada Bighorn Sheep Foundation )〕 There is some seasonal change in coloration due to the shedding of a thicker winter layer.〔(【引用サイトリンク】publisher=California Department of Fish and Wildlife )〕 Specialized hooves with adhesive soles provide traction in steep rocky terrain.〔 Female bighorn (ewes) can weigh up to and have shorter, narrow horns, while male bighorn (rams) can weigh as much as and have massive, curving horns.〔 The horns of both rams and ewes are composed of a dense layer of keratin covering a core of bone.〔 The average lifespan for Sierra bighorn males and females has been observed as 8 to 12 years.〔 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「Sierra Nevada bighorn sheep」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.