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American pika
The American pika (''Ochotona princeps''), a diurnal species of pika, is found in the mountains of western North America, usually in boulder fields at or above the tree line. They are herbivorous, smaller relatives of rabbits and hares.
==Description==
The American pika, known in the 19th century as the "little chief hare",〔Mearns, B & R. ''John Kirk Townsend: Collector of Audubon’s Western Birds and Mammals''. (Page 108 ). Retrieved from () on 2009-10-06.〕 has a small, round, ovate body. Their body length ranges from 162 to 216 mm (6–8 in). Their hind feet range from 25 to 35 mm (1–1½ in). They usually weigh about 170 g (6 oz). Body size can vary among populations. In populations with sexual dimorphism, males are slightly larger than females.〔
The American pika is intermediate in size among pikas. The hind legs of the pika do not seem to be much longer than its front legs and its hind feet are relatively short when compared to most other lagomorphs.〔 It has densely furred soles on its feet except for black pads at the ends of the toes.〔 The ears are moderately large and suborbicular and are hairy on both surfaces, normally dark with white margins. The pika's "buried" tail is longer relative to body size compared to other lagomorphs.〔 It has a slightly rounded skull with a broad and flat preorbital region. The fur color of the pika is the same for both sexes, but varies by subspecies and season.〔 The dorsal fur of the pika ranges from grayish to cinnamon-brown, often colored with tawny or orchraceous hues, during the summer. During winter, the fur becomes grayer and longer.〔 The dense underfur is usually slate-gray or lead-colored. It also has whitish ventral fur.
Males are called bucks and females are called does like rabbits.
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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