Migration & timing
Lesser Black-backed Gull in Delaware
There aren't yet enough observations of Lesser Black-backed Gull in Delaware to describe its timing with confidence.
Sighting 2 observations in Delaware
Check back as more observations come in, or explore Lesser Black-backed Gull across North America.
Lesser Black-backed Gull elsewhere
More birds in Delaware
Data: iNaturalist research-grade observations (CC0 / CC-BY), via GBIF. Excludes eBird.