60 birds were recorded seen in California in January in our iNaturalist sample; 26 of the top 50 are at their peak this month. The list is ranked by number of research-grade observations.
Top birds in January

Red-tailed Hawk

White-crowned Sparrow

Yellow-rumped Warbler
Anna's Hummingbird
American Coot
Black Phoebe

Great Egret

Great Blue Heron
Snowy Egret
House Finch

Mallard

Western Gull
All birds seen in California in January
| # | Species | Scientific name | Family | Obs. | Peak in state |
|---|---|---|---|---|---|
| 1 | Red-tailed Hawk | Buteo jamaicensis | Hawks, Eagles, and Kites | 11,557 | Jan (peak) |
| 2 | White-crowned Sparrow | Zonotrichia leucophrys | New World Sparrows | 9,396 | Jan (peak) |
| 3 | Yellow-rumped Warbler | Setophaga coronata | New World Warblers | 7,220 | Jan (peak) |
| 4 | Anna's Hummingbird | Calypte anna | Hummingbirds | 7,172 | Apr (rising) |
| 5 | American Coot | Fulica americana | Rails, Gallinules, and Coots | 6,968 | Jan (peak) |
| 6 | Black Phoebe | Sayornis nigricans | Tyrant Flycatchers | 6,606 | Apr (rising) |
| 7 | Great Egret | Ardea alba | Herons, Egrets, and Bitterns | 6,213 | Jan (peak) |
| 8 | Great Blue Heron | Ardea herodias | Herons, Egrets, and Bitterns | 6,183 | Jan (peak) |
| 9 | Snowy Egret | Egretta thula | Herons, Egrets, and Bitterns | 5,785 | Jan (peak) |
| 10 | House Finch | Haemorhous mexicanus | Finches, Euphonias, and Allies | 5,702 | Apr (rising) |
| 11 | Mallard | Anas platyrhynchos | Ducks, Geese, and Swans | 5,647 | Apr (rising) |
| 12 | Western Gull | Larus occidentalis | Gulls, Terns, and Skimmers | 5,364 | Aug (rising) |
| 13 | Bufflehead | Bucephala albeola | Ducks, Geese, and Swans | 5,017 | Jan (peak) |
| 14 | California Scrub-Jay | Aphelocoma californica | Crows, Jays, and Magpies | 4,976 | Apr (rising) |
| 15 | Red-shouldered Hawk | Buteo lineatus | Hawks, Eagles, and Kites | 4,810 | Jan (peak) |
| 16 | Double-crested Cormorant | Nannopterum auritum | Cormorants and Shags | 4,583 | Jan (peak) |
| 17 | American Wigeon | Mareca americana | Ducks, Geese, and Swans | 4,504 | Jan (peak) |
| 18 | Western Bluebird | Sialia mexicana | Thrushes | 4,346 | Apr (rising) |
| 19 | California Towhee | Melozone crissalis | New World Sparrows | 4,337 | Apr (rising) |
| 20 | Dark-eyed Junco | Junco hyemalis | New World Sparrows | 4,258 | Apr (rising) |
| 21 | Turkey Vulture | Cathartes aura | New World Vultures | 4,032 | Apr (rising) |
| 22 | Golden-crowned Sparrow | Zonotrichia atricapilla | New World Sparrows | 3,907 | Jan (peak) |
| 23 | Lesser Goldfinch | Spinus psaltria | Finches, Euphonias, and Allies | 3,872 | Apr (rising) |
| 24 | Say's Phoebe | Sayornis saya | Tyrant Flycatchers | 3,814 | Jan (peak) |
| 25 | American Kestrel | Falco sparverius | Falcons and Caracaras | 3,731 | Jan (peak) |
| 26 | Canada Goose | Branta canadensis | Ducks, Geese, and Swans | 3,700 | Apr (rising) |
| 27 | Northern Shoveler | Spatula clypeata | Ducks, Geese, and Swans | 3,697 | Jan (peak) |
| 28 | Song Sparrow | Melospiza melodia | New World Sparrows | 3,576 | Apr (rising) |
| 29 | Acorn Woodpecker | Melanerpes formicivorus | Woodpeckers | 3,479 | Apr (rising) |
| 30 | Ring-billed Gull | Larus delawarensis | Gulls, Terns, and Skimmers | 3,373 | Jan (peak) |
| 31 | Common Raven | Corvus corax | Crows, Jays, and Magpies | 3,350 | Apr (rising) |
| 32 | Black-crowned Night Heron | Nycticorax nycticorax | Herons, Egrets, and Bitterns | 3,253 | Apr (rising) |
| 33 | Ruddy Duck | Oxyura jamaicensis | Ducks, Geese, and Swans | 3,198 | Jan (peak) |
| 34 | Ruby-crowned Kinglet | Corthylio calendula | Kinglets | 3,179 | Dec (rising) |
| 35 | American Crow | Corvus brachyrhynchos | Crows, Jays, and Magpies | 3,165 | Apr (rising) |
| 36 | Cooper's Hawk | Astur cooperii | Hawks, Eagles, and Kites | 3,099 | Jul (rising) |
| 37 | Willet | Tringa semipalmata | Sandpipers and Allies | 3,067 | Jan (peak) |
| 38 | Pied-billed Grebe | Podilymbus podiceps | Grebes | 3,057 | Jan (peak) |
| 39 | Northern Mockingbird | Mimus polyglottos | Mockingbirds and Thrashers | 3,032 | Apr (rising) |
| 40 | Mourning Dove | Zenaida macroura | Pigeons and Doves | 2,940 | Apr (rising) |
| 41 | American Robin | Turdus migratorius | Thrushes | 2,843 | Apr (rising) |
| 42 | Common Goldeneye | Bucephala clangula | Ducks, Geese, and Swans | 2,787 | Jan (peak) |
| 43 | Northern Pintail | Anas acuta | Ducks, Geese, and Swans | 2,461 | Jan (peak) |
| 44 | Brown Pelican | Pelecanus occidentalis | Pelicans | 2,420 | Sep (rising) |
| 45 | Black-necked Stilt | Himantopus mexicanus | Stilts and Avocets | 2,391 | Jan (peak) |
| 46 | California Gull | Larus californicus | Gulls, Terns, and Skimmers | 2,329 | Jan (peak) |
| 47 | Savannah Sparrow | Passerculus sandwichensis | New World Sparrows | 2,264 | Oct (rising) |
| 48 | Green-winged Teal | Anas crecca | Ducks, Geese, and Swans | 2,250 | Jan (peak) |
| 49 | American White Pelican | Pelecanus erythrorhynchos | Pelicans | 2,222 | Jan (peak) |
| 50 | Northern Harrier | Circus hudsonius | Hawks, Eagles, and Kites | 2,201 | Jan (peak) |