Migration & timing

Tree Swallow in Illinois

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

Sighting 8 observations in Illinois

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

Tree Swallow elsewhere

More birds in Illinois

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