I didn't know hummingbirds also feed at sapwells! This is a good hint when you go out to see birds. Also, I find very interesting the anatomy of the body of these little flying gems.
I have the privilege to see hummingbirds everyday in my garden. I live in Guatemala, and my garden is a little paradise: azure-crowned, white-eared, Rivoli´s, berylline, rufous sabrewing, mexican violetear, and my favorite, sparkling-tailed hummingbird. And I wait every september to welcome ruby-throated hummingbird.