Selasphorus platycercus

Where did all the male Rufous Hummingbirds go? In the last couple of days they have become scarce, and I am beginning to think they have moved on in their long yearly migration.
 
In the meantime, the female Rufous Hummingbirds have claimed the feeders. With the male Rufous Hummingbirds out of the picture, we have heard a few Broad-tailed Hummingbirds again. The Broad-tailed males have a distinctive wing whistle, but not the female Broad-tailed. I think I have seen some female Broad-tailed Hummingbirds, but they lack the wing whistle of the males.