Why are these endangered moths swarming Australia’s east coast?

Last week, a sudden and massive arrival of Bogong moths made headlines across the eastern seaboard, with people in Sydney and Canberra filming the insects as they made their way into homes and cars. The moths, long known for their winter migration inland, have unfurled an unprecedented swarm that has caused both alarm and awe.

BBC science correspondent Helen Livingstone spoke with experts who say the surge is tied to a complex mix of climate‑driven behaviour and habitat loss. As temperatures climb, the moths are increasingly forced to seek cooler environments, often in urban areas where they can easily attach themselves to vehicles and the inside of buildings.

Ecologists warn that the sudden influx poses risks to both the moths and residents. While the butterflies and moths are protected under Australian conservation laws, their large numbers in cities can lead to environmental stress and human‑wildlife conflict. Authorities have issued advisories on how to manage the insects safely.

The event has prompted a broader conversation about the impacts of climate change on native species and how city dwellers can coexist with wildlife. As the moths migrate further north in search of suitable habitats, Australians will continue to watch, learn, and adapt to the unexpected visitors that flutter across their cities.