Natterer's Bat

Fascinating facts about the Natterer's Bat

• A Natterer's bat can pluck a spider from its web mid-flight without breaking the silk — then land on a branch, fold the web around the insect like a napkin, and eat it in seconds. They hunt in the cluttered understory of forests where echolocation alone fails, so they've evolved the ability to hear the vibrations of web silk brushing air, pinpointing prey their sonar would miss entirely.
• At 7 to 12 grams, a Natterer's bat weighs less than a tablespoon of sugar yet consumes roughly half its body weight in insects every night. Over a winter hibernation lasting 6 to 7 months, it survives on stored fat alone — a metabolic feat that requires its heart rate to plummet from 800 beats per minute while hunting to just 10 beats per minute in torpor.
• Natterer's bats have a fringe of stiff hairs along their tail membrane — a feature found in only a handful of bat species. These hairs act as an aerial scoop, helping them trap fast-moving flies and mosquitoes mid-flight by cupping prey toward their mouth. It's a flying net built into their body.
• Female Natterer's bats form maternity colonies of up to 50 individuals in the same roost, then synchronise their pregnancies so that nearly every pup is born within days of the others. This collective timing lets mothers leave newborns unattended while foraging — a risky strategy that works only because all mothers return at dusk to feed simultaneously, swamping the nursery with body heat and milk-givers.
• Natterer's bats have remained virtually unchanged in appearance for at least 50 million years — their fossil record shows the same fringe-tailed silhouette from the Eocene epoch. They're living fossils that have outsolved every mammal predator and climate shift simply by being perfectly fitted to their niche: the tangled forest edge where spiders live and moonlit air moves slow.

At a glance

About the Natterer's Bat

In the whispering twilight, the Natterer's bat stirs, its delicate form unfolding like a dark, leathery petal as it takes to the evening skies. With a fluttering, erratic flight, it dances through the trees, its large ears twitching with every subtle vibration, drinking in the symphony of sounds that guide it through the darkness. As it flits and weaves, its remarkable agility and acute hearing allow it to pluck unsuspecting insects from the air with precision, a true master of the nocturnal realm.

Discover more wildlife