Migration & timing
MacGillivray's Warbler in California
There aren't yet enough observations of MacGillivray's Warbler in California to describe its timing with confidence.
Sighting 3 observations in California
Check back as more observations come in, or explore MacGillivray's Warbler across North America.
MacGillivray's Warbler elsewhere
More birds in California
Data: iNaturalist research-grade observations (CC0 / CC-BY), via GBIF. Excludes eBird.