Eastern Woodland Jumping Mouse (Napaeozapus insignis) lives in eastern North forests across Eastern North America. Its conservation status is Least Concern.
Fascinating facts about the Eastern Woodland Jumping Mouse
- The woodland jumping mouse can leap a full metre in a single bound, using its extremely strong feet and long tail. Its hind legs are especially long, a trait shared by dipodid rodents that are "adapted for leaping". The tail, which is thin, tapered and about 60 % of total body length, helps balance the animal during such powerful jumps, allowing it to cover the distance in one swift motion.
- While hibernating its body temperature plunges from a normal 37 °C to just 2 °C, a dramatic reduction that conserves energy through the cold months. Before entering hibernation the mice spend more than two weeks gathering food and building fat reserves, and even during the deep sleep they awaken roughly every two weeks to urinate or to eat from their stored caches. This periodic arousal is a regular part of their winter routine.
- Only about one-third of individuals that enter hibernation survive the winter, with the remainder succumbing to hypothermia or being taken by predators. The species faces a range of natural enemies, including eastern screech owls, timber rattlesnakes, bobcats, broad-banded copperheads, American mink, weasels and striped skunks. These threats, combined with the harsh conditions of deep hibernation, account for the low survival proportion.
- In central New York the woodland jumping mouse relies heavily on fungi, with Endogone species making up roughly one-third of its stomach contents. Researchers examined 103 individuals and found the tiny spores, which are too small to see, are detected by the mouse's sense of smell. Besides fungi, its diet also includes about 25 % seeds, 10 % lepidopterous larvae and assorted fruits, and around 7.5 % beetles.
- Male woodland jumping mice defend territories that can span from 0.4 to 3.6 ha, while females occupy slightly smaller areas of 0.4 to 2.6 ha, and the two sexes' ranges commonly overlap. Such extensive home ranges support relatively high local numbers, with favourable sites harbouring an average density of about 7.5 individuals per hectare. Density estimates, however, are highly variable, ranging from as few as 0.64 to as many as 59 mice per hectare.
Sources
Every fact above was checked against these pages, and kept only where one of them states it.
At a glance
RangeEastern North America
HabitatEastern North forests
DietSeeds and insects
About the Eastern Woodland Jumping Mouse
In the dappled understory of the eastern woodland, a tiny, unassuming hero darts through the shadows, its oversized hind legs coiled like springs, ready to unleash a burst of speed that belies its diminutive size. The Eastern Woodland Jumping Mouse is a master of evasion, its large eyes watchful and alert as it navigates a complex network of hidden pathways and secret clearings, its very existence a testament to the magic that lies just beneath our feet. With each explosive leap, it seems to defy gravity itself, a fleeting glimpse of brown and white fur suspended in mid-air, a whispered promise of wonder in the quiet heart of the forest.
Hear the Eastern Woodland Jumping Mouse, and 4,400+ more
Real recorded sounds, 11 nature games and a free Daily 5, 1v1 quiz duels, conservation wins and a safe Kids mode. Free on Feravox.
