Metaquatic

Ah, it's a Broad-tailed.

Do you have any photos of the bird perched so the wing/tail length can be compared? Probably female Black-chinned Hummingbird.

The Tarsometatarsus looks short for Coot or wading bird in general. Take the picture again with a ruler beside it for comparison.

This is the under tail of a known Summer Tanager. Notice how the yellow goes all the way to the tips. The bird in question has grey tips on its under tail.

Yes my profile pic is a Prothonotary Warbler. Picture was taken at Lefleur's Bluff State Park in Jackson, MS. The local Audubon Society maintains several nesting boxes in the Jackson area. These "Swamp Canaries" are very common all over Mississippi in the Summertime. Look for them in Mosquito infested Cypress Swamps. It is possible to see them in you backyard during migration.

Thought this was a female Summer Tanager but the under tail didn't look right. A male Summer Tanager (not Hepatic or Scarlet) was seen nearby. What are your thoughts?

Pine Warbler probably female. They are often seen on the ground.

I blew this off as a common American Robin until I looked close at the picture. I was taken with the lack of white spots and eye ring. Just thought I would run it by the community to make sure this is not something else.

Seems like the consensus is Blue-gray Gnatcatcher. Thanks

Sorry, only picture I have. The beak is too long for a Gnatcatcher. Gnatcatcher's face is more rounded with shorter/straighter bill. Any other guesses? Saguaro National Park iw West of Tuscon Arizona, for those who may not know.

Notice the longer, slim, curved beak.

Doh! didn't consider the female. Thanks.

Off Hwy 80 in Southern New Mexico near the Arizona Line. In short scrub. Notice the undertail.