Migration & timing
Black-headed Gull in Ontario
There aren't yet enough observations of Black-headed Gull in Ontario to describe its timing with confidence.
Sighting 1 observations in Ontario
Check back as more observations come in, or explore Black-headed Gull across North America.
Black-headed Gull elsewhere
More birds in Ontario
Data: iNaturalist research-grade observations (CC0 / CC-BY), via GBIF. Excludes eBird.