Hasan

Confirmed!

Rather nice bird for Maricopa county!

Yeah, this isn't TUTI. They can sound like chickadees but they have a slightly tonality and set of calls.

Actually, looking at it again, the black doesn't go far enough onto the breast... weird bird. Whoops.

Um, that's a first state record and a code 4. Get that reported right away please! Where was this exactly?

Cropped even more.... I'll show myself out lol.

It just takes a little practice. In flight the two are very easy to separate (ravens are clearly much larger, soar frequently, wedge-shaped tail, etc), and once you've seen a couple I'm sure you'll become familiar with their GISS.

I would be shocked if this is identifiable. I'm not even convinced it couldn't be some sort of insect.

That's a second Redwing in Nova Scotia right now, no?

That's a redwing alright. Amazing find. Get it reported right away!

First bird is a COME, note that extensive white neck.

Yes, Mockingbirds get rarer the further from the southeast you go, particularly in the north (upper midwest, northeast). In the area I'm in (Illinois) it's can at times be pretty hard county bird to get.

GISS, petite bill, white eyebrow, and what we can see of the patterning on the belly. I don't really see how this could be Red-tailed

The first bird is a RSHA IMO. Second looks fine for Goshawk.

No

Definitely not a crossbill. I'm not familiar with any Carolina Wren call that sounds like this, Northern Cardinal might be a reasonable guess but really I don't know if there's enough for this to be identifiable.

Though the photos leave something to be desired, the lores are white, bill looks fairly bright, and the black on the neck does not look too thick.

The difficulty here is not between Eastern and Western Bluebird (the gray/dusky cheek easily eliminates that), but Western and Mountain. It's actually pretty easy to find contentious cases of ID- here's a 'Western' that I would probably call Mountain, and it only took ten seconds of scrolling on ebird: https://ebird.org/checklist/S42994893 IMO after refreshing my memory (I last had Mountain a couple months ago but I don't live in the west anymore so I don't see it often) I think structural clues (short tail, short wings, general giss) combined (weakly and skeptically) with the apparent shade of blue color would suggest Western over Mountain on this bird. It may be best left a slash bird, however. Edit: For greater context, a small percentage of Mountain Bluebirds are rather rufous below, and this bird definitely falls within that range, purely based on that coloration

Yes, Greater.

You can hear a Carolina Wren in the background as well.

Edit: whoops, forgot about Mountain Bluebird.

This is indeed a Caspian Tern. Notice the red (as opposed to orange) bill, the dark primaries, as Jim noted, and also the black in front of the eye. Though I suppose it is possible towards the end of February, generally the only large NA tern to retain a black cap to this extent in the winter is Caspian.

I'm pretty sure the question was solely about the subspecies. Any more photos? I'm not an expert on gulls by any means but at least from this photo it is pretty light, all things considered.

Blue Jay was my first impression as well. They have a similar hoarse 'rattle' call. It's definitely some type of mimic though

I don't really see a good reason this isn't a pure Hairy; it's bulky, has a longish bill, no spots on the outer tail feathers, and the black on the nape appears to be the right shape. It's fine for Hairy IMO until proven otherwise.