Shorebird confusion -- unconfused!

I went to the Julian Wetlands this afternoon during the hottest part of the day -- it was too early to knock doors for work, so I figured a little time on the steamy marsh would be a good alternative.

I saw some good birds, nothing unusual -- but I saw some birds I just couldn't ID. I've been sitting here with my Peterson's Eastern (the 1947 edition), my Peterson's Western (that one's brand new), and Bill Thompson III's Identify Yourself. Still, I'm kinda hesitant on the following birds:

Mystery bird 1:
Okay -- is that a Lesser Yellowlegs with a realllllllly long beak? Optical illusion? We haven't had any Greater Yellowlegs at Julian this year, so that's not really an option; besides, this bird was about Lesser size. Sorry I don't have a better/another photo for you.

Mystery bird 2, ID'd by John and Patrick as a Spotted Sandpiper:
These pics are awful, but it was blazing hot with heat shimmer all over the place, and I was pretty far away. Anyhow -- note the distinctly white belly and breast -- only the neck is grayish. Smaller than the Lesser Yellowlegs. And see that weird white part on the shoulder? Note that Patrick mentioned that as a field mark specific to the Spotted Sandpiper! And this guy is molting into winter plumage, so no spots on the Spotted Sandpiper. Thanks, John and Patrick!

Here's the next bird, Mystery bird 3--I sent this one out on the local listserv, and Nick Bolgiano (co-author of the newly updated and revised Birds of Pennsylvania) sent me an email asking for more pics, so we may well get an ID on this guy:

This bird was just slightly smaller than the Lesser Yellowlegs, and I could've sworn (though it was really bright and I only had the binocs, not the scope) that its legs were RED. Probably an optical illusion. But check out that filthy-dirty breast -- way more dark feathering than the other LEYEs I saw. But then again -- it's probably just another LEYE.

Last one, Mystery bird 4, who indeed turned out to be the same kind of bird as Mystery Bird 2, a Spotted Sandpiper:

Okay -- your mission, should you choose to accept it, is to help a shorebird beginner figure this crap out! Again, thanks to John and Patrick for the ID.

Other stuff I saw:

an actual Lesser Yellowlegs

a Least Sandpiper--they're easy: brown and tiny.

a bunch of different dragonflies flitting around. Here, one of the dragonflies was sitting on the mud and touching his tail to the water over and over; you can't even see him, though you can see the ring of waves resulting from his water-tapping. The others were big dragonflies I can't ID.

I tried to ID this damselfly, but I couldn't find one with as much blue on the eyes, head, and thorax and yet no blue on long long tail part. I gave up. Patrick came to the rescue with an ID of Spreadwing sp., probably Slender Spreadwing. Pretty!

This appears to be a Ruby Meadowhawk, albeit a small one.

There were a ridiculous number of butterflies out today as well: No idea again, but Patrick says Pearl Crescent. Sheesh. Someday I'll gut it up and get a Kaufman's guide to butterflies and moths.

Now THIS one I know--and yet it turns out I DON'T know -- this is the elusive (to me, anyway) Viceroy!:
Patrick pointed out that horizontal stripe across the hindwings, which I missed. For some reason, I thought Viceroys were a little more orange-y. So much for that highly technical field mark point, right?

There were Clouded Sulphurs, Cabbage Whites, a Buckeye, and some others I couldn't photograph or ID.

And what would a beautiful day be without a stunning sunset?