Daubenton's bat

Fascinating facts about the Daubenton's bat

• A Daubenton's bat can hear the footstep of a mosquito landing on water from 2 metres away. Their echolocation is so precise they detect ripples smaller than a grain of salt — then pluck the insect clean from the surface without breaking stride. This hunting method, called trawling, evolved only once in bats, and Daubenton's bat perfected it so completely they now hunt over water on every continent except Antarctica and Australia.
• Daubenton's bat has feet like a heron's — disproportionately large, with sharp claws that trail in the water as they fly just centimetres above the surface. A single bat will work the same 100-metre stretch of lake night after night, learning every ripple and current, hunting the same route so efficiently they catch 500 insects in a 30-minute session. They have memorised their hunting ground the way a tightrope walker knows their rope.
• In winter, Daubenton's bats disappear into caves and tunnels across Europe, where they enter torpor — a hibernation-like state where their heartbeat drops from 300 beats per minute to just 10. They can survive up to 58 days without food, living off stored fat reserves no thicker than a sheet of cardboard. Yet they wake every few weeks to drink and briefly hunt, the only bats in their range disciplined enough to maintain this winter rhythm.
• The scientific name honours the 18th-century French naturalist Daubenton — but he never saw this bat alive. The species wasn't formally described until 1819, a century after his death. What he did document was meticulous observation of anatomy and behaviour, a standard that eventually led to the bat being named in his honour — a recognition that careful, patient watching is how science advances.
• Daubenton's bat colonised human water infrastructure across Europe within the last 200 years. Reservoirs, canal systems, and man-made lakes now host populations 10 times larger than those hunting natural wetlands. They have become so dependent on human-engineered freshwater that their survival is now tied to how we manage our water — a wild bat whose fate rests entirely in human hands.

At a glance

About the Daubenton's bat

As dusk falls over the tranquil waters, a tiny, winged silhouette emerges from the shadows, Daubenton's bat taking to the evening air with an effortless flutter of its leathery wings, its high-pitched calls echoing across the landscape as it embarks on a nocturnal hunt for insects. With an agility that belies its small size, the bat dances through the darkness, its echolocation cries painting a sonic picture of the world around it, a remarkable symphony of sound and motion that orchestrates its every move. In this fleeting, moonlit world, Daubenton's bat reigns supreme, a master of the night, its delicate form a testament to the wonders of evolutionary adaptation.

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