I'm still trying with the hummingbirds, trying to get a colorful shot that excludes the plastic feeder. Since the birds don't go near the few flowers we have, the color has to come from the birds. These first two shots were taken with the Canon M100 mirrorless, 70-200 lens, and the onboard flash, triggered with the Canon wifi cellphone app. Because the little flash fired, the iridescent neck feathers reflected some (depending on the angle) of the light.
The third image was taken with the 1D Mark III, 500 f4 lens, and natural light, prefocused and remotely triggered with a Canon IR transmitter. Good image, but it's got that plastic feeder in there.
The plastic feeder pulls them in, but then what? The solution would be a bed of hummingbird-friendly, colorful flowers, but that's probably not going to happen this late in this short summer.
Regarding species, I think the bird in the top two images is a male Rufous, and the bird at bottom (and in the July 19 post) might be a female Broad-tailed. Those IDs seem consistent with the range information and illustrations in the Sibley Guide to Birds.