The chances of seeing western hummingbird species in Bucks County are relatively low, as the ruby-throated hummingbird is the primary species found in the eastern United States, including Pennsylvania
However, there have been notable occurrences of western species as vagrants in the area.
In recent years, several western hummingbirds, such as the Rufous Hummingbird and the Allen's Hummingbird, have been reported in Bucks County.
For instance, an immature male Allen's Hummingbird was observed from November through January at a feeder in Pipersville, marking only the third record of this species in Pennsylvania
Additionally, the Rufous Hummingbird is the most common western visitor, with some individuals reported to have overwintered in southeastern Pennsylvania, including Montgomery County
While these sightings are exciting for birdwatchers, they remain relatively rare.
Most western hummingbirds typically migrate to Mexico in the fall, and those that appear in the east do so for reasons that are not entirely understood.