psweet

The duck looks like a hybrid (Mallard X Mottled, or perhaps a domestic cross, or perhaps all three?). On Jan. 31, there shouldn't be any ducks molting at all, let alone into eclipse plumage.

There really isn't much rufous, and I don't see any in the tail. There doesn't seem to be the green smudges of an Anna's, either. Perhaps a female Black-chinned?

Very gray, with long primaries, looks like a Pewee to me.

I thought about Gull-billed for #5, but I think the bill shape's due to foreshortening. The back looks a bit dark and I'm not sure the wing pattern's right for Gull-billed. But it's definitely the one I'm least certain about.

How are you ruling out Alder?

Yes, it is.

Yellow Warbler and Barn Swallow. Barn Swallow is our only swallow with those white spots in the tail.

Looks like Least Sandpipers.

With that head pattern, looks like a Forster's.

Looks like a young Cowbird to me.

This is a Bobolink. If it was singing, it's probably a male that's molted into its winter plumage.

Seconded.

These are all youngsters -- they take a while to acquire the long tail.

It sounds to me like a young hawk, but it wouldn't surprise me if those are Blue Jays -- they do some amazing mimicry of raptors.

Welcome to Whatbird! This sounds like one of the sparrows -- what sort of habitat are they in? Desert scrub, Oak-Juniper, etc.