Now Where'd They Go?

I didn't get Hummingbirds for long, it seems. I observed at least two birds at the backyard nectar feeders from the very end of May until mid month. Now they are nowhere to be seen. I confirmed that fact with a BirdCam survey yesterday. None of my feeders are getting any traffic at all. Perhaps these birds are nesting, but in past years I had regular visits every day in June and last year had activity at all my feeders. For whatever reason, I am having a bad hummingbird season in 2009. There isn't much to do about it. I'll keep the feeders stocked and clean and hope for the best. But it just isn't summer without these amazing creatures!