Orange Swift

Triodia sylvina

The orange swift or orange moth is a moth belonging to the family Hepialidae. The species was first described by Carl Linnaeus in 1761 and was previously placed in the genus Hepialus. It is distributed throughout Europe. Source

Where it is now

In the last 8 weeks this insect was recorded 225 times across 14 areas (each area is a 5 degree square).

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Movement and weather

Each season it is first heard regularly where daytime highs are around 21°C (typically 20 to 29°C, from 8 areas).

Arrival dates

The week it was first heard regularly in each region, after at least six weeks away. Dates differ from south to north, so a region has a range.

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Figures are effort corrected and come from automatic sound identification, which makes mistakes. How this is measured and how it compares with human observers.