luvnature

It's an immature Broad-billed Hummingbird getting it's iridecsent feathers in or subadult male as this link shows toward the bottom of the page: http://www.jimburnsphotos.com/pages/broa...
I think it's too dark to be Buff-bellied.

The first photo is of the male Allen's Hummingbird and the other 2 are of the female Allen's Hummingbird. Read more about them at the link I gave above.

It is a male and female (both adults) Anna's Hummingbird. See here:
http://www.allaboutbirds.org/guide/Annas...

Well, it's a Common Kingsnake. As to what subspecies, it could be either if this is a baby. The desert type can have babies that look like this. Go read more: http://www.reptilesofaz.org/Snakes-Subpa...

Wow! That's the first I've heard of this! I suggest you post these photos at Arizona HerpCount: http://www.herpcount.org/
I know a scientist with this site would like to see these photos. Thank you for these photos to document this behavior for others to see too! :-)

The UA Wild Cat Research and Conservation is studying Bobcats and are wanting Bobcat photos. Read more here: http://www.uawildcatresearch.org/bobcat_...

American Robins will pass through Arizona every year. I even see them once or twice a year in Tucson.

It looks like a Verdin nest.

It looks like some type of Wolf Spider.

This from http://www.allaboutbirds.org/guide/Rufou... :
Male Allen's Hummingbirds have a green back and rump. Rarely, male Rufous Hummingbirds show a green back, so look closely. If you see any completely rufous feathers (not just rufous-edged) on the back, it is a Rufous Hummingbird.

I clicked above for it to be Rufous but I'm changing my mind to Allen's.