Squirrels of the World

Sundasciurus juvencus 187

Kelabit Highlands, and other mountains in Sarawak (Ma-
laysia). See description above.
S. j. subsignanus—Long Petak, Sungai (= stream) Telen (1170
m), Sungai Badang, and Sungai Kayan in East Kalimantan
(Indonesia). S. j. subsignanus diff ers from S. j. jentinki in
having buff rather than white tips on the tail hairs.

conservation: IUCN status—least concern. Population
trend—no information.

habitat: It is confi ned to montane forests.

natural history: This squirrel is diurnal. It is active

mainly in the crowns of small trees, and it often follows

fl ocks of mixed species of birds as they fl ush insects.

general references: Medway 1977.

Sundasciurus juvencus (Thomas, 1908)

Northern Palawan Tree Squirrel

description: S. juvencus is similar to S. steerii, but the

northern Palawan tree squirrel has a general brown color,

with less rufous. The sides are gray, and the tail is tipped in

black. The ventral surface is variable, ranging from all white

to all rufous.

size: Female—HB 195.5 mm; T 155.1 mm; Mass 245.3 g.

Male—HB 200.9 mm; T 171.8 mm; Mass 283.9 g.

Sex not stated—HB 204.6 mm; T 165.3 mm; Mass 259.0 g.

distribution: This squirrel is found in northern Palawan

Island (Philippines).

geographic variation: None.

conservation: IUCN status—least concern. Population

trend—stable.

Sundasciurus jentinki. Photo courtesy Jon Hall, http://www.mammal
watching.com.