sfinmt

Appears to be Dark-morph red-tail. Rufous tail, and no white streaking anywhere around the head.

Looks like Ring-billed to me.

Near Florida Canyon, Pima Co., AZ. Apr.25

Found at the mouth of Florida Canyon, Pima Co., AZ. April 28, 2019. It was giving a call similar to the "chi-bik" of a Least Flycatcher, but it was rougher, lower pitched, and louder. The 'vest' made me think WWPE upon first sight, but the eye-ring, strong yellow, and short bill made me look at Empids. The closest fit is Yellow-bellied, but range maps do not extend to AZ and there are very few eBird occurrences for AZ. Any thoughts?

Slate-colored is correct. It is just a browner variation.

This was one of the target birds I wanted when I visited Bandeleier Monument and vicinity last spring. I failed to find one. I may have been too early.

The flank markings and the white flecks along the edge of the wing look more like Winter Wren.

Bendire's

Orange undertail. Might be Aplomado.

Juvenile Gos have pointed retrix tips. This bird's are rounded.

Hooded Mergansers

A first cycle California Gull, I believe.

Agree with Bewick's.

The first photo are ravens. Long narrow wings, long head, heavy bill Less certain about the second photo but looking a bit more crow-ish.

Intoxicated on ash berries perhaps?

looks better for redhead

Female COGO.

I was leaning that way too akiley.

Yep, I can see the tail better after zooming in on a larger screen.

Head looks a bit small for Cooper's. Tail looks notched too. Sharpie? Agree with TBN on the others.

The golden nape and overall profile (smallish head compared to body size) are good for Golden.

The white eye-ring, dark auricular with white border, and chestnut shoulder patch indicate a Vesper Sparrow, although the auricular appears a bit dark in this photo. Await further confirmation.

The belly markings and white in dorsal primaries are pointing to a juvi Harlan's, but I am not certain of that.

Without good lighting or a view of the back and tertials, what is it seperating this bird from a male Brewer's?

I suggest sending these pics to Ben Pierce via FB. He is very good with ducks. https://www.facebook.com/ben.pierce.92123?fref=ufi