akandula

That dark brown compact appearance with silver based primaries made me think Murphy's Petrel at first glance. But that would be shockingly rare at this time of the year, so definitely wait for more opinions.

Confirmed! Note the white below and brownish above with reddish wings and tail.

I agree with Gray Kingbird. The similar Loggerhead Kingbird would have a big-headed appearance, a darker-colored head (as an adult), and a white-tipped tail.

Female/immature Indigo Bunting is correct, due to the faint streaking on the breast, tan wingbars, and white throat.

1. and 3. Lesser Antillean Bullfinch 2. and 10. Carib Grackle 4. Gray Trembler 5. Gray Kingbird 6. Magnificent Frigatebird 7. Lesser Antillean Saltator 8. Laughing Gull 9. Royal Tern

Common Goldeneyes are known for their distinctive whistling sound; I think that at least some of the others on my list have a more whirring sound.

These are some ducks that I know that have a whistling/rattling sound during takeoff or in the air: Northern Shoveler Green-winged Teal Common and Barrow’s Goldeneye Common Merganser

Interesting. I thought that this bird had too green of a back for an American.

Looks like a Lesser Goldfinch.

Yes, this is a young Bald Eagle. To separate eagles from other types of raptors, note the heavy body, large head, and long, hooked bill. Young Golden Eagles don't have white that close to the body.

These are Gray-crowned Rosy-Finches. Black Rosy-Finches have a much darker (almost black) overall.

That's actually a leucistic Black-capped Chickadee. Leucism is a condition in which there is partial loss of pigmentation in a bird or animal. In this example, it's on the head. Nice find!

Welcome to Whatbird! I'm pretty sure you saw a Varied Thrush. https://www.allaboutbirds.org/guide/Varied_Thrush/id

Just a photo artifact. It's quite common for black to appear blue in photos, and this doesn't have to happen throughout the photo.

It’s not easy to sex Barred Owls in the field, as it’s a sexually monomorphic species. Females are generally larger than males, but this is only obvious when they’re next to each other. Also, female calls are consistently (probably almost always) higher in pitch than the male’s, but again, it’s not easy unless you have taken an audio recording or regularly sexed Barred Owls by call in the field before. Finally, it’s not the best time of the year to analyze behavior differences (such as mating/rearing chicks).

Nice! I haven't seen a Blue-winged Teal in a long time...

Looks good for Lesser Scaup, with that back-peaked head.

That's a young Red-tailed Hawk. Note the contrasting dark patagial bars and dark "belly band." Red-shoulders lack the contrasting dark patagials. Adults would have orange barring on the belly while immatures would have more extensive dark streaking below. Rough-leggeds lack the contrasting dark patagials and also have a dark tail band. Northern Harriers and Mississippi Kites have more slender wings.

California Thrasher confirmed. Note the downward curved bill, dark eyeline, and buffy color on the belly/undertail coverts. A rare Brown Thrasher would have streaked underparts and Crissal/LeConte's Thrashers would have grayer underparts. Bendire's Thrashers would have a shorter, straighter bill.

@kevarc, great shots! In case you want to know, the duck is actually a Ring-necked Duck.

That's a male Red-naped Sapsucker. Yellow-bellied Sapsuckers would have a complete black border around the throat and lack the red nape (back of head region). Also, Yellow-bellied Sapsuckers are quite rare in California.

I agree with Trevor -- this individual is too rich brown to be a Great-tailed. Also, in most of the Gulf Coast/Florida, note the dark eyes of Boat-tails of both sexes (Great-tails would have pale eyes). Great-tails do not occur in Florida, so this information is only useful in overlap areas like Louisiana and Texas.

For 8, I'm leaning Tropical Kingbird, with those dark tail/wings. The back is not too green. @bpresby, do you have a picture of the primary (outer wing) feathers/know what the kingbird's call sounded like? If not, I think it's best to leave it as a Tropical/Couch's Kingbird, unless you can get an expert's opinion.

No problem! I’ll finish up reviewing/adding to Trevor’s IDs today.