Red-legged sun squirrel (Heliosciurus rufobrachium) head

The red-legged sun squirrel (''Heliosciurus rufobrachium'') is a species of

rodent Rodents (from Latin , 'to gnaw') are mammals of the order Rodentia (), which are characterized by a single pair of continuously growing incisors in each of the upper and lower jaws. About 40% of all mammal species are rodents. They are n ...

in the family

Sciuridae Squirrels are members of the family Sciuridae, a family that includes small or medium-size rodents. The squirrel family includes tree squirrels, ground squirrels (including chipmunks and prairie dogs, among others), and flying squirrels. Squ ...

, also commonly known as the isabelline red-legged sun squirrel. It is native to tropical western and central Africa where its range extends from Senegal in the west, through Nigeria and the Republic of Congo to Uganda and Tanzania in the east. Its natural

habitat In ecology, the term habitat summarises the array of resources, physical and biotic factors that are present in an area, such as to support the survival and reproduction of a particular species. A species habitat can be seen as the physical ...

s are subtropical or tropical moist lowland

forest A forest is an area of land dominated by trees. Hundreds of definitions of forest are used throughout the world, incorporating factors such as tree density, tree height, land use, legal standing, and ecological function. The United Nations' ...

s and moist

savanna A savanna or savannah is a mixed woodland- grassland (i.e. grassy woodland) ecosystem characterised by the trees being sufficiently widely spaced so that the canopy does not close. The open canopy allows sufficient light to reach the ground to ...

. This species is thought to be common and has a very wide distribution, so the

International Union for Conservation of Nature The International Union for Conservation of Nature (IUCN; officially International Union for Conservation of Nature and Natural Resources) is an international organization working in the field of nature conservation and sustainable use of nat ...

has rated its conservation status as being of "

least concern A least-concern species is a species that has been categorized by the International Union for Conservation of Nature (IUCN) as evaluated as not being a focus of species conservation because the specific species is still plentiful in the wild. T ...

Description

The red-legged sun squirrel is a medium-sized squirrel, with an average head-body length of and an average weight of ; males are slightly larger than females. They have large eyes, small rounded ears, and a tail about the same length as the head and body combined. The fur is dark brown to grey across the body, but reddish on the limbs and muzzle and black on the tail. Females have two teats on the chest, and another four much further back on the body on the rear part of the abdomen. The brain is slightly smaller than expected, compared with other African squirrels of similar size.

Distribution and habitat

The red-legged sun squirrel is found across sub-Saharan Africa from

Senegal Senegal,; Wolof: ''Senegaal''; Pulaar: 𞤅𞤫𞤲𞤫𞤺𞤢𞥄𞤤𞤭 (Senegaali); Arabic: السنغال ''As-Sinighal'') officially the Republic of Senegal,; Wolof: ''Réewum Senegaal''; Pulaar : 𞤈𞤫𞤲𞤣𞤢𞥄𞤲𞤣𞤭 ...

and Gambia in the west to

Kenya ) , national_anthem = " Ee Mungu Nguvu Yetu"() , image_map = , map_caption = , image_map2 = , capital = Nairobi , coordinates = , largest_city = Nairobi ...

in the east but not south of the

Congo River The Congo River ( kg, Nzâdi Kôngo, french: Fleuve Congo, pt, Rio Congo), formerly also known as the Zaire River, is the second longest river in Africa, shorter only than the Nile, as well as the second largest river in the world by discharge ...

. It is found in habitats with large trees in which it can climb, in moist primary and secondary forests, plantations, isolated trees in savannahs and gardens. It has been reported from mangrove swamps (''

Avicennia ''Avicennia'' is a genus of flowering plants currently placed in the bear's breeches family, Acanthaceae. It contains mangrove trees, which occur in the intertidal zones of estuarine areas and are characterized by its "pencil roots", which are ...

'' spp.) in Sierra Leone. 21 subspecies are currently recognised: * ''H. r. rufobrachium'' -

Bioko Bioko (; historically Fernando Po; bvb, Ëtulá Ëria) is an island off the west coast of Africa and the northernmost part of Equatorial Guinea. Its population was 335,048 at the 2015 census and it covers an area of . The island is located of ...

* ''H. r. arrhenii'' - Rwanda * ''H. r. aubryi'' -

Gabon Gabon (; ; snq, Ngabu), officially the Gabonese Republic (french: République gabonaise), is a country on the west coast of Central Africa. Located on the equator, it is bordered by Equatorial Guinea to the northwest, Cameroon to the nort ...

* ''H. r. benga'' - Equatorial Guinea * ''H. r. caurinus'' - Gambia * ''H. r. coenosus'' - western

Democratic Republic of the Congo The Democratic Republic of the Congo (french: République démocratique du Congo (RDC), colloquially "La RDC" ), informally Congo-Kinshasa, DR Congo, the DRC, the DROC, or the Congo, and formerly and also colloquially Zaire, is a country in ...

* ''H. r. emissus'' - northern

Cameroon Cameroon (; french: Cameroun, ff, Kamerun), officially the Republic of Cameroon (french: République du Cameroun, links=no), is a country in west-central Africa. It is bordered by Nigeria to the west and north; Chad to the northeast; the C ...

* ''H. r. hardyi'' -

Cote d'Ivoire Ivory Coast, also known as Côte d'Ivoire, officially the Republic of Côte d'Ivoire, is a country on the southern coast of West Africa. Its capital is Yamoussoukro, in the centre of the country, while its largest city and economic centre i ...

* ''H. r. isabellinus'' -

Nigeria Nigeria ( ), , ig, Naìjíríyà, yo, Nàìjíríà, pcm, Naijá , ff, Naajeeriya, kcg, Naijeriya officially the Federal Republic of Nigeria, is a country in West Africa. It is situated between the Sahel to the north and the Gulf o ...

* ''H. r. keniae'' - western

Kenya ) , national_anthem = " Ee Mungu Nguvu Yetu"() , image_map = , map_caption = , image_map2 = , capital = Nairobi , coordinates = , largest_city = Nairobi ...

* ''H. r. leakyi'' - eastern Kenya * ''H. r. leonensis'' -

Sierra Leone Sierra Leone,)]. officially the Republic of Sierra Leone, is a country on the southwest coast of West Africa. It is bordered by Liberia to the southeast and Guinea surrounds the northern half of the nation. Covering a total area of , Sierr ...

* ''H. r. lualabae'' - central DRC * ''H. r. maculatus'' -

Ghana Ghana (; tw, Gaana, ee, Gana), officially the Republic of Ghana, is a country in West Africa. It abuts the Gulf of Guinea and the Atlantic Ocean to the south, sharing borders with Ivory Coast in the west, Burkina Faso in the north, and To ...

* ''H. r. medjianus'' - northeastern DRC * ''H. r. nyansae'' -

Uganda }), is a landlocked country in East Africa. The country is bordered to the east by Kenya, to the north by South Sudan, to the west by the Democratic Republic of the Congo, to the south-west by Rwanda, and to the south by Tanzania. The sou ...

* ''H. r. obfuscatus'' - southern Nigeria * ''H. r. occidentalis'' -

* ''H. r. pasha'' - northern DRC * ''H. r. rubricatus'' - central-eastern DRC * ''H. r. semlikii'' - eastern DRC

Ecology

The red-legged sun squirrel is diurnal and forages in the upper and middle storeys of large trees. The diet consists primarily of fruits and seeds, but some green vegetation and arthropods are also eaten; much time is spent foraging along branches and probing into crevices for insects and their larvae. In captivity, these squirrels caught and ate birds introduced into their cages, and also ate birds eggs. These squirrels are usually observed alone or in pairs, but seem to be gregarious as they have been seen grooming each other and resting side by side. Nesting takes place in holes in trunks and branches which are lined by twigs with their green leaves still attached. Breeding takes place twice a year with usually two young being born in each litter.

References

{{Taxonbar, from=Q309306 Heliosciurus Rodents of Africa Mammals described in 1842 Taxonomy articles created by Polbot