Амазония кішкентай үйіршігі (Amazonia kishkentai uıırshigi)

Species of rodent

The Amazon dwarf squirrel (Microsciurus flaviventer) is a chipmunk sized tree squirrel native to South America.

As its name suggests, the Amazon dwarf squirrel is relatively small, with a head body length of and a tail long. Adults weigh between , with males being slightly larger than females. The fur varies from reddish to dull brown, fading gradually to yellow or greyish on the underparts. There is a distinctive patch of pale yellow fur behind the ears, while the tail has faint yellowish bands and white frosting. The limbs are unusually long for tree squirrels. In the forelimbs, the humerus and radius are of equal length, an adaptation thought to increase the squirrel's ability to climb large trees, compensating for a lack of shoulder mobility. The longer hindlimbs allow for stronger muscles, so that the squirrel can leap over larger gaps, relative to its size, than more typically sized squirrels can.

Eight subspecies of Amazon dwarf squirrel are generally recognised. own distinct species rather than subspecies. The same study also showed that M. f. otinus and M. f. similis are more closely related to Microsciurus mimulus and Sciurus pucheranii than they are to M. flaviventer. +Microsciurus flaviventer taxonomy Subspecies Authority Synonyms DistributionM. f. flaviventer Gray (1867) manarius Western Brazil, northeastern PeruM. f. napi Thomas (1900) avunculus, florenciae Northeastern EcuadorM. f. otinus Thomas (1901) none Western ColombiaM. f. peruanus J. A. Allen (1897) none Northern PeruM. f. rubrirostris J. A. Allen (1914) rubicollis Southern PeruM. f. sabanillae Anthony (1922) none Southern EcuadorM. f. similis Nelson (1899) none Far western ColombiaM. f. simonsi Thomas (1900) none Central eastern Ecuador

The squirrels use all levels of the forest, from the ground to the tree canopy, but are most commonly found in the understory. They feed on arthropods, tree bark, and fungi, and have been observed to closely follow flocks of birds while foraging, although the reason for this is unclear. They are diurnal and highly arboreal, even for tree squirrels, frequently jumping from branch to branch. They spend the night in nests formed from plant fibres, and located several metres above the ground. They are mostly solitary, but may be found with others feeding on the same tree. Their calls include a bird like "trill" and a series of soft "chucks" used as an alarm call. Very little is known of their reproduction, although litters are thought to be small.