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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 Western gray squirrel ： ウィキペディア英語版 Western gray squirrel The western gray squirrel (''Sciurus griseus'') is an arboreal rodent found along the western coast of the United States and Canada. In some places, this species has also been known as the silver-gray squirrel, the California gray squirrel, the Oregon gray squirrel, the Columbian gray squirrel and the banner-tail. There are three geographical subspecies: ''Sciurus griseus griseus'' (central Washington to the western Sierra Nevada in central California); ''S. g. nigripes'' (from south of San Francisco Bay to San Luis Obispo County, California; and ''S. g. anthonyi'', which ranges from San Luis Obispo to northern Baja California). ==Description== The western gray squirrel was first described by George Ord in 1818 based on notes taken by Lewis and Clark at The Dalles in Wasco County, Oregon. Compared with the eastern gray squirrel ''S. carolinensis'' or the eastern fox squirrel (which have been introduced into its native range), these squirrels are shy, and will generally run up a tree and give a hoarse chirping call when disturbed. Weights vary from about , and length (including tail) from . It is the largest native tree squirrel in the western coastal United States. Western gray squirrels exhibit a form of coloration known as counter shading. The dorsal fur is a silver gunmetal gray, with pure white on the underside; there may be black flecks in the tail. Ears are large but without tufts. The ears turn reddish-brown at the back in the winter. The tail is long and typically very bushy. Tree squirrels undergo a complete head-to-tail molt in the spring and a rump-to-head molt in the fall. Tail hair is replaced only in the spring. Nesting mothers will use their tail hair to line birthing nests. Western gray squirrels eat berries, nuts, a variety of seeds, and the eggs of small birds. 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「Western gray squirrel」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.