Migration & timing

Great Blue Heron in Illinois

There aren't yet enough observations of Great Blue Heron in Illinois to describe its timing with confidence.

Sighting 18 observations in Illinois

Check back as more observations come in, or explore Great Blue Heron across North America.

Great Blue Heron elsewhere

More birds in Illinois

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