I checked the eBird map for reports of Sabine's Gulls during the months of August and September so far this year.
Most states west of Kansas City have a smattering of SABU reports, but Colorado
has by far the most eBird reports of this striking gull this fall. Lucky us!
Consider reporting all of your sightings to eBIrd, and be a citizen scientist during this influx.
Joe Roller,
Denver