Migration & timing

Tree Swallow in Massachusetts

There aren't yet enough observations of Tree Swallow in Massachusetts to describe its timing with confidence.

Sighting 11 observations in Massachusetts

Check back as more observations come in, or explore Tree Swallow across North America.

Tree Swallow elsewhere

More birds in Massachusetts

Data: iNaturalist research-grade observations (CC0 / CC-BY), via GBIF. Excludes eBird.