(Petaurus norfolcensis).

Also known as the Flying squirrel, Sugar squirrel, Squirrel Flying Opossum and Squirrel Flying Phalanger, the Squirrel Glider is similar in appearance to Petaurus breviceps (the Sugar Glider) but with a longer and more pointed face, lengthier and narrower ears and a much bushier, softly furred tail. Facial markings are often more distinct. The belly is usually a rich white or creamy white. Molar teeth are much larger than in P. breviceps. The head and bodylength of a Squirrel Glider can reach 230mm with the tail extending up to a further 300mm. Maximum weight is 260 grams.

Almost twice the size of the Sugar Glider, the Squirrel Glider is otherwise similar to it in appearance and gliding ability. However, the Squirrel Glider is far rarer, more restricted in range, and less studied than the Sugar Glider. It inhabits dry sclerophyll forest and woodland and is absent from the dense coastal ranges, although in Queensland it occurs in some wet forest areas bordering on rainforest. Its distribution extends further inland than that of the Sugar Glider.

The Squirrel Glider probably has a diet similar to that of the Sugar Glider and it also nests in a leaf-lined nest hollow. Both appear to breed at similar times of the year and growth and development of the young of both species are strikingly similar. The two species have interbred in captivity, producing fertile offspring.

Although the Squirrel Glider is usually more common than the Sugar Glider in places where both species coexist, it may be endangered, at least in the southern part of its range. In northern Victoria an important habitat for the larger species is remnant vegetation along roadsides and creek and river frontages in cleared pasture and the preservation of such habitats may be vital for its future survival.

It is likely that clearing of open woodland areas for agriculture had a dramatic effect on the Squirrel Glider, which has been less able to adapt to the changed habitats than its smaller relative. Research is urgently required to document the status, distribution and habitat requirements of this species. Source: 'Complete Book of Australian Mammals' - Australian Museum, 1983.

• 1993 Gold $200