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Sciurus
The genus ''Sciurus'' ( or ) contains most of the common, bushy-tailed squirrels in North America, Europe, Temperate zone, temperate Asia, Central America and South America. Species The number of species in the genus is subject to change. In 2005, Thorington & Hoffman- whose taxonomic interpretation is followed by the IUCN website- accepted 28 species in the genus: Genus ''Sciurus'' *Subgenus ''Sciurus'' **Allen's squirrel, ''Sciurus alleni'' **Arizona gray squirrel, ''Sciurus arizonensis'' **Mexican gray squirrel, ''Sciurus aureogaster'' **Eastern gray squirrel, ''Sciurus carolinensis'' **Collie's squirrel, ''Sciurus colliaei'' **Deppe's squirrel, ''Sciurus deppei'' **Japanese squirrel, ''Sciurus lis'' **Calabrian black squirrel, ''Sciurus meridionalis'' **Mexican fox squirrel, ''Sciurus nayaritensis'' **Fox squirrel, ''Sciurus niger'' **Peters's squirrel, ''Sciurus oculatus'' **Variegated squirrel, ''Sciurus variegatoides'' **Red squirrel, Eurasian red squirrel, ''Sciurus vul ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Fox Squirrel
The fox squirrel (''Sciurus niger''), also known as the eastern fox squirrel or Bryant's fox squirrel, is the largest species of tree squirrel native to North America. It is sometimes mistaken for the American red squirrel or eastern gray squirrel in areas where the species co-exist, though they differ in size and coloration. Description The fox squirrel's total length measures , with a body length of and a similar tail length. They range in weight from . There is no sexual dimorphism in size or appearance. Individuals tend to be smaller in the West. There are three distinct geographical morphs in coloration. In most areas, the animal's upper body is brown-grey to brown-yellow with a typically brownish-orange underside, while in eastern regions, such as the Appalachians, there are more strikingly-patterned dark brown and black squirrels with white bands on the face and tail. In the South and parts of Nebraska and Iowa along the Missouri River, there are populations with unif ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Red Squirrel
The red squirrel (''Sciurus vulgaris''), also called Eurasian red squirrel, is a species of tree squirrel in the genus ''Sciurus''. It is an arboreal and primarily herbivorous rodent and common throughout Eurasia. Taxonomy There have been over 40 described subspecies of the red squirrel, but the taxonomic status of some of these is uncertain. A study published in 1971 recognises 16 subspecies and has served as a basis for subsequent taxonomic work. Although the validity of some subspecies is labelled with uncertainty because of the large variation in red squirrels even within a single region, others are relatively distinctive and one of these, ''S. v. meridionalis'' of South Italy, was elevated to species status as the Calabrian black squirrel in 2017. At present, there are 23 recognized subspecies of the red squirrel. Genetic studies indicate that another, ''S. v. hoffmanni'' of Sierra Espuña in southeast Spain (below included in ''S. v. alpinus''), deserves recognition a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sciurus Vulgaris
The red squirrel (''Sciurus vulgaris''), also called Eurasian red squirrel, is a species of tree squirrel in the genus ''Sciurus''. It is an arboreal and primarily herbivorous rodent and common throughout Eurasia. Taxonomy There have been over 40 described subspecies of the red squirrel, but the taxonomic status of some of these is uncertain. A study published in 1971 recognises 16 subspecies and has served as a basis for subsequent taxonomic work. Although the validity of some subspecies is labelled with uncertainty because of the large variation in red squirrels even within a single region, others are relatively distinctive and one of these, ''S. v. meridionalis'' of South Italy, was elevated to species status as the Calabrian black squirrel in 2017. At present, there are 23 recognized subspecies of the red squirrel. Genetic studies indicate that another, ''S. v. hoffmanni'' of Sierra Espuña in southeast Spain (below included in ''S. v. alpinus''), deserves recognition as ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mexican Gray Squirrel
The Mexican gray squirrel (''Sciurus aureogaster'', F. Cuvier), also known as the red-bellied squirrel, goes by the name or in Mexico. The species consists of two subspecies ''S.'' ''aureogaster'' and ''S. nigrescens'', which are native to Mexico and Southern Guatemala. The Mexican gray squirrel was introduced to the Florida Keys The Florida Keys are a coral island, coral cay archipelago off the southern coast of Florida, forming the southernmost part of the continental United States. They begin at the southeastern coast of the Florida peninsula, about south of Miami a ... in 1938 and is considered an invasive species. In Mexico, the Mexican gray squirrel typically has a light to dark gray dorsal side and a ventral side ranging from white, to orange, to a deep chestnut color. However, in northern native populations, it is common for individuals to have all black or gray dorsal fur with a slight coloration of red on the belly and rump. In Elliott Key, the common phenoty ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Arizona Gray Squirrel
The Arizona gray squirrel (''Sciurus arizonensis'') is a tree squirrel, in the genus ''Sciurus'', endemic to the canyons and valleys surrounded by deciduous and mixed forests in eastern Arizona and northern Mexico. It is threatened by habitat loss. The only other large squirrel that is within its range is Abert's squirrel, which has ear tufts and lives in pine forests. Although they act and look like other gray squirrels, the Arizona gray squirrel is actually more closely related to the fox squirrel. Phylogeny and description ''Sciurus arizonensis'' is a member of the order Rodentia and the family Sciuridae. It is distinguishable from ''Sciurus aberti'' by its longer flatter skull, broader rostrum, and having only one molar instead of two. ''S. arizonensis'' also has smaller ears with no tufts and a red/black stripe on the underside of their tail. Some sexual dimorphism can be seen in these squirrels, but it varies with some populations having larger males, and other populatio ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Abert's Squirrel
Abert's squirrel or the tassel-eared squirrel (''Sciurus aberti'') is a tree squirrel in the genus ''Sciurus'' native to the southern Rocky Mountains from the United States to the northern Sierra Madre Occidental of Mexico, with concentrations found in Arizona, New Mexico, and southwestern Colorado. It is closely associated with, and largely confined to, mature ponderosa pine forests. It is named in honor of the American naturalist John James Abert; nine subspecies are recognised. It is recognizable by its tufted ears, gray color, pale underparts and rufous patch on the lower back. The squirrel feeds on the seeds and cones of the Mexican pinyon and the ponderosa pine when they are available, but will also take fungi, buds, bark, and carrion. Breeding normally occurs in summer, with a spherical nest being built high in the canopy. Etymology Abert's squirrel is named after Colonel John James Abert, an American naturalist and military officer who headed the Corps of Topographical E ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Yucatan Squirrel
The Yucatan squirrel (''Sciurus yucatanensis''), originally named the Yucatan gray squirrel, also once named the Campeche squirrel, is a tree squirrel in the genus ''Sciurus'' found in the Yucatán Peninsula and adjacent areas. It is native to northern Belize, northeastern Guatemala, and southeast Mexico. Biology The Yucatan squirrel lives in dry deciduous and evergreen forests, semiarid pine-oak woodlands, and secondary forest growing in formerly logged areas. They are found in lowlands below an altitude of . They are active during the day and rest during the night, spending most of their time in trees. They are most active in the early morning, but may be seen sunning on a branch later in the day. Their dreys (or nests), to be found in branches high up in the trees, are built from leaves and twigs. Their food consists of soft fruit, nuts and seeds, whilst Reid in 2009 concluded that their main diet consists of flowers, buds, and shoots. Females generally give birth to two or ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Red-tailed Squirrel
The red-tailed squirrel (''Sciurus granatensis'') is a species of tree squirrel distributed from southern Central America to northern South America. Distribution It is found in Central and South America (Colombia, Costa Rica, Ecuador, Panama, and Venezuela) and the Caribbean islands of Trinidad and Tobago and Margarita. According to the Global Register of Introduced and Invasive Species it has also been introduced and is invasive in Cuba, however this refers to a small population found around some parts of the margin of Rio Almendares in Havana that escaped from the Havana Zoo. Habitat Ranges from in elevation. It inhabits many types of forests, and can be found in picnic grounds. Taxonomy It was recently reclassified as ''Notosciurus granatensis'' in 2015, ''Notosciurus'' being a genus created in 1914 by Joel Asaph Allen for a juvenile of this species. However, the IUCN still puts it as a member of the genus ''Sciurus''. Infraspecific variability This is an extremely variabl ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Variegated Squirrel
The variegated squirrel (''Sciurus variegatoides'') is a tree squirrel in the genus ''Sciurus'' found in Costa Rica, El Salvador, Guatemala, Honduras, southern Mexico, Nicaragua, and Panama. Fifteen subspecies are recognised. It is a common squirrel and the International Union for Conservation of Nature has rated it a "least-concern species". Variegated squirrels kept as pets in Germany have been implicated in the transmission of a bornavirus to humans from which three people have died. Description The variegated squirrel is a medium-sized squirrel; the head-and-body length is about with a tail of much the same length. It weighs about . The several subspecies differ in appearance and there is often a considerable variation between the appearances of individuals in the same population. The dorsal colouration varies between dark brown to yellowish grey. The neck tends to be darker than other parts and there is often a paler patch behind the ears. The underparts are usually some sha ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Deppe's Squirrel
Deppe's squirrel (''Sciurus deppei'') is a species of tree squirrel in the genus ''Sciurus'' native to Belize, Costa Rica, El Salvador, Guatemala, Honduras, Mexico, and Nicaragua. Description ''Sciurus deppei'' varies in individual color. The overall color of the body is gray to yellowish brown or rusty-colored brown, while the face is gray. The legs are dark gray or rust colored. The top of the tail is black with a few white hairs mixed in while the bottom side of the tail is yellowish orange to a rust color, the hairs on the tip of the tail are white. Changes in their fur due to seasons aren't typically seen, except for the white tip on their tail and the patches of hair behind the ears disappear during the summer season. Size varies a little bit in the Deppe's squirrel with the average female being around 287.3 g, HB 210.2 mm, and T 169.4 mm. The males average is 268.3 g, HB 207.2 mm, and T 176.0 mm. Both sexes are close in size, but the females tend t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mexican Fox Squirrel
The Mexican fox squirrel (''Sciurus nayaritensis'') is a species of tree squirrel found throughout the Sierra Madre Occidental of Mexico as far south as Jalisco — and northward into the Chiricahua Mountains of southeastern Arizona, U.S.Best, T.L. (1995) ''Sciurus nayaritensis''. Mammalian Species 492, 1-5. This species, or its subspecies, is sometimes called the Nayarit, Apache, or Chiricahua fox squirrel. It has been evaluated as an IUCN Red List Least Concern species. Description Physical The Mexican fox squirrel has a grizzled brown back with a yellow to rufous underside, and a charcoal tail frosted with white. Two molts occur each year; the winter pelage is more rufous and the scrotum is often ringed with white.Thorington, R.W., Jr., Koprowski, J.L., Steele, M.A., and Whatton, J. (2012 ''Squirrels of the World'' Johns Hopkins University Press, Baltimore, 472 pp. Mass is approximately . Behavior Mexican fox squirrels are diurnal, non-territorial, and do not hibernate duri ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
