There must be at least one female every year that nests somewhere close to my property during the season, although I haven't actually seen a nest. Hummingbirds often use trees to put their nests in, but not always, I hear. Last spring, I first spotted the two little ones for the first time flying from the direction of the dry creek, but can't be sure that that's where the nest was. Watching the young ones can be even more fun than watching the adults!