Based on 1,318 research-grade iNaturalist observations in Oregon, Pale Swallowtail is most often recorded in June; in Oregon it behaves like a summer visitor / breeder. It ranks #11 among butterflies recorded in the state in our data.
Papilio eurymedon
Pale 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 June
Western Tiger Swallowtail
Lorquin's Admiral
California Tortoiseshell
Snowberry Checkerspot
Clodius Parnassian
Pacific Fritillary
Small White
Painted Lady
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 Pale Swallowtail appear in Oregon?
Mainly May–July, with the most records in June.
How common is Pale Swallowtail in Oregon?
It ranks #11 by number of iNaturalist observations among butterflies in Oregon (1,318 records in our sample).