Migration & timing
Harlequin Duck in Massachusetts
There aren't yet enough observations of Harlequin Duck in Massachusetts to describe its timing with confidence.
Sighting 6 observations in Massachusetts
Check back as more observations come in, or explore Harlequin Duck across North America.
Harlequin Duck elsewhere
More birds in Massachusetts
Data: iNaturalist research-grade observations (CC0 / CC-BY), via GBIF. Excludes eBird.