Silky Pocket Mouse (Perognathus flavus) lives in desert grasslands across Southwestern North America. It feeds on seeds and insects. Its conservation status is Least Concern.
Fascinating facts about the Silky Pocket Mouse
- The silky pocket mouse holds the title of the smallest pocket mouse in the Heteromyidae family, a distinction that sets it apart from its Perognathus relatives. Its average head-body length is about 60 mm, making it noticeably diminutive. Despite its size, it tolerates harsher habitats better than other pocket mice, thriving in low valley bottoms with soft soils, weeds and shrubs where it digs burrows and hides seed caches.
- Its tail never reaches the length of its head and body combined, staying shorter than the roughly 60 mm average body length. The tail is buff or dusky on top and white underneath, and it lacks the tuft of hair that many rodents display at the tip. Males tend to have a slightly longer tail than females, though overall the tail remains modest. These features together give the mouse a distinctive, streamlined silhouette.
- During each foraging sortie the silky pocket mouse gathers an average of 0.154 g of seed, a modest load that fuels its nightly activity. It removes the husks from the seeds, stuffs the kernels into its cheek pouches and carries them back to its burrow for storage. When a 25 g cache is placed near a burrow, the mouse can haul and stash the entire amount in a single night, demonstrating its efficient caching behaviour.
- When a pile of 25 g of seed is placed near a burrow, the silky pocket mouse can collect and store the whole amount in a single night, showing how efficiently it gathers food. It typically carries about 0.154 g of seed on each foraging sortie, so the large cache represents many trips worth of haul.
- The silky pocket mouse never needs to drink water, even when the air is dry, because it extracts all required moisture from the seeds and plant material it eats. It can survive at relative humidities as low as 25 % and as high as 60 % without seeking external water sources. This adaptation allows it to remain active in arid grasslands and desert-like habitats where free water is scarce, relying solely on its food to meet hydration needs.
Sources
Every fact above was checked against these pages, and kept only where one of them states it.
At a glance
RangeSouthwestern North America
HabitatDesert grasslands
DietSeeds and insects
About the Silky Pocket Mouse
In the arid expanses of the American Southwest, the silky pocket mouse weaves a subtle path, its downy fur a whispered promise of resilience in a landscape of sun-baked stone and spiny vegetation. With each gentle rustle of its tiny feet, it stirs the dust of its underground world, a hidden realm of tunnels and burrows that crisscross the desert floor like a secret network of silk threads. As it darts through the underbrush, its large, dark eyes shining like polished onyx, the silky pocket mouse embodies the quiet, unassuming beauty of a life lived in harmony with the harsh yet majestic beauty of the desert.
Hear the Silky Pocket 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.
