Bogong moths use a stellar compass for long-distance navigation at night

David Dreyer (), Andrea Adden (), Hui Chen, Barrie Frost, Henrik Mouritsen, Jingjing Xu, Ken Green, Mary Whitehouse, Javaan Chahl, Jesse Wallace, Gao Hu, James Foster, Stanley Heinze and Eric Warrant ()
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David Dreyer: University of Lund
Andrea Adden: University of Lund
Hui Chen: University of Lund
Barrie Frost: Queens University
Henrik Mouritsen: University of Oldenburg
Jingjing Xu: University of Oldenburg
Ken Green: Australian National University
Mary Whitehouse: Macquarie University
Javaan Chahl: University of South Australia
Jesse Wallace: University of Lund
Gao Hu: Nanjing Agricultural University
James Foster: University of Lund
Stanley Heinze: University of Lund
Eric Warrant: University of Lund

Nature, 2025, vol. 643, issue 8073, 994-1000

Abstract: Abstract Each spring, billions of Bogong moths escape hot conditions across southeast Australia by migrating up to 1,000 km to a place that they have never previously visited—a limited number of cool caves in the Australian Alps, historically used for aestivating over summer1,2. At the beginning of autumn, the same individuals make a return migration to their breeding grounds to reproduce and die. Here we show that Bogong moths use the starry night sky as a compass to distinguish between specific geographical directions, thereby navigating in their inherited migratory direction towards their distant goal. By tethering spring and autumn migratory moths in a flight simulator3–5, we found that, under naturalistic moonless night skies and in a nulled geomagnetic field (disabling the moth’s known magnetic sense4), moths flew in their seasonally appropriate migratory directions. Visual interneurons in different regions of the moth’s brain responded specifically to rotations of the night sky and were tuned to a common sky orientation, firing maximally when the moth was headed southwards. Our results suggest that Bogong moths use stellar cues and the Earth’s magnetic field to create a robust compass system for long-distance nocturnal navigation towards a specific destination.

Date: 2025
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DOI: 10.1038/s41586-025-09135-3

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