Late-season sightings are valuable. You can help document where and when hummingbirds are present by reporting your sightings. If you are no longer seeing hummers where you live, there is no need to report.
"This could be my last hummingbird for the 2013 season. It is 45 degrees this morning in Bella Vista, Arkansas—and a day later than my usual "last" hummer date!"
Susan V. in Bella Vista, Arkansas (October 17, 2013)