New Zealand Long-tailed Bat

Fascinating facts about the New Zealand Long-tailed Bat

• The New Zealand long-tailed bat captured the 2021 Bird of the Year title, a competition normally reserved for avian species. This unexpected win raised its profile nationally and highlighted that it is one of only two extant terrestrial mammals native to New Zealand. Its unique status as an endemic, insect-eating micro-bat made the achievement especially notable.
• Individuals of the long-tailed bat defend home ranges that can extend up to 20 km in radius from their roost. Their distribution is patchy but widespread, with a core population centred in Eglinton Valley, Fiordland where most sightings occur.
• When hunting, the long-tailed bat emits ultra-short echolocation pulses that peak at 28 kHz and last about 6.3 ms, a signal pattern typical of forest-edge foragers. These high-frequency calls let the bat pinpoint airborne prey during aerial hawking, a crucial advantage where visual cues are limited. The brief, precise bursts also reduce echo clutter, improving navigation over water and forest margins.
• The long-tailed bat enters torpor on most days when it roosts alone, doing so on about 80 % of days, but this drops to roughly 35 % when it shares a cavity with others. Individual bouts can last up to twelve hours in solitary roosts and about nine hours in communal ones. Torpor is used throughout the year but is especially important in colder periods, allowing the bat to cut its metabolic rate and survive brief wet or chilly spells.
• The species almost never spends more than one night in the same cavity, moving to a different roost each evening. Roosts include hollow tree stumps, cracks in rocks, caves and spaces under bark, and the bats switch between solitary and communal sites frequently. This nightly relocation is thought to lower predator exposure, and the constant change also reflects their habit of selecting new trees, often dead but standing, within open-structured lowland forest edges.

Sources

Every fact above was checked against these pages, and kept only where one of them states it.

• Wikipedia

At a glance

About the New Zealand Long-tailed Bat

In the fading light of day, the New Zealand Long-tailed Bat stirs, unfolding its delicate wings like a dark, leathery cloak, as it takes to the evening skies with a gentle, whispery flutter. With an air of quiet purpose, it navigates the forest's twilight realm, its large, round eyes drinking in the shadows as it pursues the insect prey that sustains it, a fleeting, nocturnal monarch of a world both fragile and forgotten. As it flits and weaves through the trees, its very existence a testament to the enduring, if precarious, beauty of life in the wild.

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