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common squirrel monkey
The common squirrel monkey (''Saimiri sciureus'') is a small New World monkey of the Cebidae (squirrel monkey) family, native to the tropical areas of South America.
==Range and introductions==
The common squirrel monkey can be found primarily in the Amazon Basin, including territories in the countries of Brazil, Colombia, Ecuador, French Guiana, Guyana, Peru, Suriname and Venezuela;〔 a small population has been introduced to Florida, Hawaii, Galapagos and many of the Caribbean Islands.〔LONG JL 2003. Introduced Mammals of the World: Their History, Distribution and Influence (Cabi Publishing) by John L. Long (ISBN 9780851997483).〕 A group of free-ranging individuals was spotted and photographed in 2009 at the Tijuca Forest in Rio de Janeiro - possibly the result of an illegal release or of an escape from the pet trade;〔''O Globo'', 4 May 2009, Ancelmo Gois column〕 by 2010, the squirrel monkey had begun to be considered as an invasive species in the Brazilian Atlantic rainforest, and concerns were expressed about its role as a predator of eggs of endangered bird species.〔(''O Globo'', 25 May. 2010; available at )〕 The common squirrel monkey prefers to live in the middle canopy, but occasionally comes to the ground or goes up into the high canopy. They like vegetation which provides good cover from birds of prey in the rainforest, savannah, mangroves, or marshlands.
At least five populations of common squirrel monkeys have existed in Florida since the 1960s, if not earlier. Common squirrel monkeys have been established at Silver Springs since at least the late 1960s; rhesus macaques were established in the area by 1938, but there is no firm information on when the squirrel monkeys were released. A colony of twelve to fifteen common squirrel monkeys noted in the 1960s residing in a hammock of trees by the springs; they migrated downstream to the Ocklawaha River by 1975. Another population, derived from two pairs released in the 1960s, lives on the Bartlett Estate in Broward County; they numbered 43 in 1988. In 1976, 15 squirrel monkeys escaped from the Tropic Wonderland attraction in Titusville, Florida; their descendants have since become established in the area. In the 1980s, 500 and 1000 common squirrel monkeys remained in the shuttered Masterpiece Gardens park in Polk County, persisting despite efforts to capture them. Additionally, a "semi-free-ranging" population has existed at Monkey Jungle in Goulds in Miami-Dade County since 1960.〔
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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