Hummingbirds and evening

It's been a hummingbird circus around here - there are at least three ruby-throated hummingbirds currently whizzing around the old red oak, through the porch, visiting the feeder, etc.

This evening, eating dinner on the porch, the whirr of wings was constant. 

I didn't manage to get a photo of a hummingbird, and the light was getting dim, in any case.