Finding Fuel
Darting among flowers, hovering at feeders, and flying long distances, hummers are using a lot of energy. The tiny birds are big eaters. No animal on earth has a faster metabolism. They are burning energy so fast that they need to eat 1.5 to 3 times their weight in food each day.

Your backyard hummers will leave while nectar-rich flowers are still in bloom and feeders are full. Fewer hours of daylight trigger the hormonal changes that cause their urge to fuel up and fly south.

One hummer can visit as many as two hundred flowers in fifteen minutes. What natural nectar sources are available now — and which ones are fading?

• Report the natural sources of nectar hummingbirds are finding in your area.
• Photo Gallery of Fall Nectar Sources

What is still blooming?
Tom Chambers

Which flowers are fading?
Amy Evoniuk

Report at least once per week while hummingbirds are present. With your help, our map will show where hummingbirds are present during the fall migration season.

• What to Report
• Report to the Map

Map | List