You can read all of the observations people have submitted at this link. Here are some of the highlights:

Weather and Migration
Along the migration pathway, many people watched how hummingbirds responded to weather events. On Wednesday along the Texas midcoast, the hummingbirds came down when the rain showers moved in:

Sept. 15, Port Lavaca, Texas
"We had our biggest 'fall out' today. Some showers moved in and, from noon on, the backyard filled with Ruby-throated Hummingbirds. Forty to fifty hummers were at the feeders….The feeders were just swinging at times when seven or eight were fighting or leaving at the same time. Should peak here on the TX midcoast this weekend depending on the weather!" wrote Harlen Aschen.

On Friday, the wind shifted to the north after a cold front crossed Kentucky and the hummingbirds took off:

Sept. 17, Whitesville, Kentucky
"The loss was quite dramatic. We estimated that we had 180 to 230, and I noticed this evening that I only have about 10% left. I guess they left sometime this afternoon. I figured that when they left, they would leave early in the morning...so it was a shock that they were here this morning and gone by around 4:00 pm."

Going, going…but still not gone
The most common comments contributed last week were of dwindling numbers, occasional visitors, and feeders that stayed unusually full.

"Encore au moins un," came the word each day from Stokes, Quebec, confirming the presence of at least one hummingbird.

"And then there was one!" wrote a woman with one lone hummingbird at her feeder in Michigan.

Feeder worries? Keep it up!

"How many more days should I fill the feeder? I do not want to encourage anyone to stay past the leaving date."

Don't worry. Keep your feeder up. You will not cause the hummers to stay longer than they should. Hummingbirds migrate according to day length cues. Their internal clocks tells them when it's time to go.

Caution for Cold Nights
Take your feeder inside on cold nights. That way, the nectar will be at room temperature when you put it outside the next morning. Otherwise, a tummy full of cold liquid can cause the tiny hummingbird's body temperature to drop to dangerous levels.

Thanks to everyone for sharing their first-hand, backyard observations of North America's favorite birds! Please continue to tell us what you see.