Based on 3,547 research-grade iNaturalist observations in Pennsylvania, Ruby-throated Hummingbird is most often recorded in August; in Pennsylvania it behaves like a summer visitor / breeder. It ranks #35 among birds recorded in the state in our data.
Archilochus colubris
Ruby-throated Hummingbird in Pennsylvania 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 Pennsylvania in August
Places to look in Pennsylvania
National ForestAllegheny National Forest
State ParkPresque Isle State Park
Botanical GardenJenkins Arboretum
State ParkCherry Springs State Park
State ParkColton Point State Park
State ParkLeonard Harrison State Park
FAQ
When does Ruby-throated Hummingbird appear in Pennsylvania?
Mainly May–September, with the most records in August.
How common is Ruby-throated Hummingbird in Pennsylvania?
It ranks #35 by number of iNaturalist observations among birds in Pennsylvania (3,547 records in our sample).