Mammals
Spotted Bat
Euderma maculatum · also called spotted bats
Flying alone over a moonlit desert canyon, a spotted bat calls at a pitch low enough for a nearby hiker to actually hear, its enormous ears and bold black-and-white coat making it one of the most distinctive bats in North America.
Overview
The spotted bat, Euderma maculatum, is an insect-eating mammal native to desert and mountain habitat across the arid interior of western North America. Its proportionally massive ears, rare human-audible echolocation calls, and striking black-and-white spotted coat make it one of the more visually and acoustically unusual bats found anywhere on the continent.
A bat you might actually hear coming
While nearly every bat’s echolocation calls sit far above human hearing, the spotted bat calls low enough that people nearby can sometimes hear it directly, a genuinely rare trait that has made this striking, solitary species a favourite among bat researchers.
Status
Least Concern, though naturally low in density and thinly distributed across suitable desert and mountain habitat in western North America.
Spotted Bat: common questions
Why does the spotted bat have such large ears?
This species has enormous ears, proportionally among the longest of any bat species, nearly matching the length of its own body when fully extended, an adaptation believed to aid in detecting faint echoes and the sounds of moths in flight.
Can people hear the spotted bat's echolocation calls?
Yes, this species produces echolocation calls at an unusually low frequency, low enough that many people can hear the calls directly without any specialised detection equipment, a rare trait since most bat echolocation calls are pitched far above human hearing range.
What does the spotted bat look like?
This species has a distinctive black coat marked with three large white spots on the back and shoulders, combined with its notably oversized ears, making it one of the more visually recognisable and unmistakable bats found in North America.
Why is the spotted bat rarely seen?
This species is considered naturally uncommon across its range and typically roosts alone or in very small groups within cliff crevices, rather than forming large communal colonies, making direct encounters and detailed study relatively rare.