Borneo black-banded squirrel

The Borneo black-banded squirrel, Callosciurus orestes, is a rodent of the family Sciuridae endemic to northern Borneo. It is a middle-elevation species, known from Mount Dulit above 1,000 metres, Usun Apau, the Kelabit Highlands and the upper Terusan in northern Sarawak, and from Mount Kinabalu between 1,000 and 1,700 metres and Mount Trusmadi at about 1,500 metres in Sabah. It appears to be restricted to lower montane forest and upper dipterocarp forest. The upper body is finely speckled brown, with a pale buffy spot behind each ear, a grey underside that sometimes has a reddish tinge, and a black and buffy-white stripe along each side. It is diurnal and active in small to medium-sized trees, and fruit and black ants have been recorded as food on Mount Kinabalu. The IUCN lists it as Least Concern because it is a wide-ranging middle montane species; some forest loss is occurring, but not enough to warrant Near Threatened.