Gulf Fritillary

Dione vanillae

The Gulf fritillary or passion butterfly is a bright orange butterfly in the subfamily Heliconiinae of the family Nymphalidae. That subfamily was formerly set apart as a separate family, the Heliconiidae. The Heliconiinae are "longwing butterflies", which have long, narrow wings compared to other butterflies. Source

Where it is now

In the last 8 weeks this insect was recorded 230 times across 10 areas (each area is a 5 degree square).

See the Gulf Fritillary on the live map

Movement and weather

Over the weeks it was present in the past year, its centre in North America ranged from 26°N in December to 38°N in May, about 1,300 km apart.

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.

Download every area as CSV

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