Long-legged Myotis

Fascinating facts about the Long-legged Myotis

• At 2 millimetres, the Long-legged Myotis's ears are so small they'd fit inside a pencil eraser — yet they decode the echoes of wingbeats from a single moth 5 metres away in total darkness. Each click travels at 10 clicks per second, painting a 3D map of the night that lets the bat hunt with precision a sighted animal couldn't match. Their brain processes these echoes faster than we can blink, solving geometry problems in real time.
• A Long-legged Myotis weighs less than a penny but flies 160 kilometres in a single night hunting across forests and over water. They clock 40 kilometres per hour in bursts, their legs trailing behind like tiny oars — the limb that inspired their name is actually a hunting stabiliser, not a speed tool. Over a 20-year life, a single bat will consume roughly 500,000 insects, many of them crop-destroying pests.
• These bats roost in caves so deep that sunlight never reaches them, yet they know when winter arrives and migrate up to 400 kilometres to hibernacula where the temperature stays just above freezing. Their heartbeat drops from 900 beats per minute to 10 during torpor, a metabolic shutdown so complete they look dead — this is how they survive 6 months without food. A handful of hibernating colonies contain tens of thousands of individuals stacked like leaves.
• Female Long-legged Myotis give birth to just one pup per year in mid-June, the smallest of western myotis babies — newborns are naked and blind for weeks. The mother roosts alone with her offspring, teaching it to hunt by example over 4 weeks before the juvenile is independent. This slow reproduction means populations recover slowly if colonies collapse, making them vulnerable to habitat loss.
• Guano from Long-legged Myotis colonies has shaped cave ecosystems for millennia, feeding crickets, beetles, and fungi that exist nowhere else. The bats themselves host parasites and microbes found in no other mammal, genetic archives of co-evolution stretching back thousands of years. Yet in just 50 years, white-nose syndrome has devastated neighbouring species — this bat's survival depends on keeping its caves free of the fungus that nearly erased its cousins.

At a glance

About the Long-legged Myotis

In the fading light of dusk, the Long-legged Myotis takes to the skies, its slender form silhouetted against the vibrant hues of sunset as it embarks on a nocturnal hunt for insects, its long, slender legs tucked neatly against its body. With a fluid, almost ethereal motion, it dances through the air, its leathery wings beating at a hypnotic pace as it pursues its prey with unwavering dedication. As it flits and weaves, its high-pitched calls echo through the darkness, a haunting serenade to the night itself, a testament to the unyielding vitality of this captivating creature.

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