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Bogong moths rebound in massive swarms after decade collapse

By Drooid · Sep 30, 2026, 11:23 PM UTC · How we work

Summary

Bogong Moths Return

Bogong moths returned in massive spring swarms after a decade-long population collapse.
Scientists link the swarms to increased inland rainfall, warmer winter and strong northerly winds.
iNaturalist recorded about 800 citizen-science observations since Friday.
Residents of Batemans Bay and Malua Bay reported millions of moths covering eaves, decks and windows.
The swarms feed endangered mountain pygmy possums, signaling ecosystem recovery in the Australian Alps.

Summary

Scientists Map Migration

Researchers are trialing new tags and isotope analysis to map bogong moth migrations, potentially prompting a formal status review.
The IUCN lists the bogong moth as endangered, yet Australian federal law provides no protection.
Indigenous custodians consider the moth a cultural food and traditionally travel to the Alps for ceremonies.

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Bogong Moths Return

Bogong moths returned in massive spring swarms after a decade-long population collapse.
Scientists link the swarms to increased inland rainfall, warmer winter and strong northerly winds.
iNaturalist recorded about 800 citizen-science observations since Friday.
Residents of Batemans Bay and Malua Bay reported millions of moths covering eaves, decks and windows.
The swarms feed endangered mountain pygmy possums, signaling ecosystem recovery in the Australian Alps.

1 / 2