Based on 1,235 research-grade iNaturalist observations in Oregon, Anise Swallowtail is most often recorded in May; in Oregon it behaves like a summer visitor / breeder. It ranks #13 among butterflies recorded in the state in our data.
Papilio zelicaon
Anise Swallowtail in Oregon by month
Bars show research-grade observations per month. They mix true seasonality with how often people are outdoors, so treat small numbers with caution.
Also seen in Oregon in May
Common Ringlet
Silvery Blue
Painted Lady
Echo Azure
Lorquin's Admiral
Pale Swallowtail
Propertius Duskywing
Juniper Hairstreak
Places to look in Oregon
National ForestWillamette National Forest
National ForestMount Hood National Forest
National ForestDeschutes National Forest
Botanical GardenHoyt Arboretum
Botanical GardenLeach Botanical Garden
National ForestUmatilla National Forest
FAQ
When does Anise Swallowtail appear in Oregon?
Mainly April–August, with the most records in May.
How common is Anise Swallowtail in Oregon?
It ranks #13 by number of iNaturalist observations among butterflies in Oregon (1,235 records in our sample).