They come in a close second to my bluebirds. We have hummingbirds the entire spring, summer and fall...and they are CRAZY hummingbirds. They are always buzzing around, usually shooting way up in the air and then dive-bombing back down.
For a number of years I have always tried to find their nests, but have had no luck. Today the first hummingbirds of the 2010 season arrived!