akiley

The top bird in the 2nd photo appears to be a 2nd cycle bird, with almost no white in the wing, and size compared to the bird below it make it a Ringer also.

I agree with Ring-billed. The bottom bird in the second photo shows a large white mirror (spot) on P10 (the outermost primary), and no discernable window on P9. This is good for Ringer. Adult Cali Gulls have a decent sized mirror on P9.

Shape/structure is spot on for Herring Gull. Bill and head are too big for Kumlien's. I see no sign of Glaucous influence in the bill. I like washed out Herring.

There's also a very good Cackling Goose PDF from the ABA. It's not a link so I don't know how to add that here, but if you Google: "aba cackling goose pdf" it'll be the first thing.

I agree with you. This looks good for taverneri. Tav essentially looks like a more Canada-like Cackling Goose, and may be lumped with Canada in the future. Structurally, and in terms of bill shape/size, tavs look intermediate between say Richardson's Cackling and a small Canada. Overall coloring on Canada and Cackling Geese is variable individually, and across subspecies. So the lighter breast should not be a problem here. Looks classic Tav.

1) White-throated Sparrow 2) Saltmarsh Sparrow 3) Ipswich Savannah Sparrow 4) American Black Duck

Correct. Female type with the clean throat.

Looks good for first-winter Herring to me.

This is a Greater Scaup based on the head and bill shape. Scaup of both species can show limited to almost no white on the face and cause confusion with Tufted Duck. A similar Scaup here in CT caused confusion just the past couple days.

The green back on a male here is interesting, but 5-10% of male Rufous Hummingbirds have green backs. That's why an adult male Rufous/Allen's with an all green back isn't safely indentified as Allen's.

Probably, although you can't rule out Allen's without tail shots. Adult male Rufous is the only age/sex combo of either species that is field-identifiable.

Herring on top, and Kumlien's Iceland with 2 Ring-billed on the bottom.

Looks good for Richardson's Cackling Goose. The white neck band has nothing to do with the identification, as it varies individually and across subspecies.

I'm seeing all Long-billed.

Definitely OCWA. Nice Gray-headed celata.

Yes. Celeta subspecies.

You're right. 3 Purples and Dunlins.

White-throated Sparrow

Yes.

I just see California, Heermann's and one Western. Not sure if Iceland meant Thayer's or Kumlien's. There's a difference there in what to search for.

Welcome to Whatbird. That's a European Starling.

Yes.

I agree with Mew.

California in the back of photo 1 and on the left of photo 2. Everything else is a Western.

I can't positively pick out anything other than Surf.