When it comes to hummingbirds, according to all my "vast" research (through Google) there is really only one type that migrates through Virginia -- the ruby-throated hummingbird.
The ruby-throated hummingbird is a bright green to olive green in color. The male has the distinctive bright red throat.
We've had lots of hummingbirds come to the feeders, but not one male. Not. One.
Apparently I am hosting the only hummingbird convent in the country.