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Siberian ibex
The Siberian ibex (''Capra sibirica'') is a species of ibex that lives in central Asia. It has traditionally been treated as a subspecies of the Alpine ibex, and whether it is specifically distinct from other ibex is still not entirely clear.〔 It is the longest and heaviest members of the genus ''Capra'', though its shoulder height is surpassed by the markhor.
==Appearance==
Siberian ibexes are large and heavily built goats, although individual sizes vary greatly. Males are between in shoulder height, and weigh between . Females are noticeably smaller, with heights between , and weights between . The nose is straight in profile, the neck short, and the back straight. The neck is also particularly thick and muscular in males, but much less so in females. Both sexes have beards, although the male's beard is more pronounced, and those of females are sometimes absent altogether. Both sexes also possess a large scent gland, about across, beneath the tail.〔Huffman, B. (2004). ''(Capra sibirica. )'' ultimateungulate.com〕
The female's horns are relatively small, and grey-brown in colour, measuring an average of long. Those of fully-grown males are black and typically measure about , although in extreme cases they can grow to . Both sexes have circular rings around their horns that represent annual growth, but males also have large transverse ridges along the front surface. The exact shape of the horns varies considerably between individuals.〔
The colouration is also variable, from dark brown to light tan, with some reddish individuals. There is usually a stripe of darker hair down the centre of the back and onto the tail, and some males have saddle-like patches on the back in the winter. The undersides are paler, and, in the winter, mature males becoming much darker with white patches. Females and infants are generally more bland in colour than the adult males, and do not always have the stripe down the back. Siberian ibexes typically moult between April and July, developing their paler summer coat, which continues to grow and become darker as the year progresses, reaching the full winter condition around December.〔
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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