Bird Conservation Region 32

Coastal California

An ecological region spanning California, with 122 survey routes. BCRs are the natural unit for bird trends.

What Is Moving Here

long arc declinecomputed index

Yellow-headed Blackbird has collapsed in Coastal California: down 98% on the route-weighted index since 1970.

long arc increasecomputed index

Eurasian Collared-Dove has surged in Coastal California: up 170× on the route-weighted index since 2006.

long arc declinecomputed index

Black-necked Stilt has collapsed in Coastal California: down 98% on the route-weighted index since 1970.

long arc increasecomputed index

Canada Goose has surged in Coastal California: up 100× on the route-weighted index since 1985.

long arc declinecomputed index

Green-tailed Towhee has collapsed in Coastal California: down 97% on the route-weighted index since 1971.

long arc increasecomputed index

California Gull has surged in Coastal California: up 74× on the route-weighted index since 1973.

How Guilds Are Faring

Grassland birds

Shorebirds

Wetland birds

Generalists

Aerial insectivores

Birds of prey

Game birds

Arid-land birds

Forest birds

Waterfowl

Survey Routes

Species By Family

Hawks, Eagles & Kites Accipitridae

Bald Eagle +567%Cooper's Hawk +6%Golden Eagle -52%Northern Harrier -75%Red-shouldered Hawk +503%Red-tailed Hawk +69%Sharp-shinned Hawk +17%Swainson's Hawk 27×White-tailed Kite -73%

Bushtits Aegithalidae

Larks Alaudidae

Horned Lark -89%

Kingfishers Alcedinidae

Belted Kingfisher -26%

Ducks, Geese & Waterfowl Anatidae

Canada Goose 100×Cinnamon Teal -85%Common Merganser -29%Gadwall +43%Mallard +80%Northern Pintail -77%Northern Shoveler +244%Redhead +33%Ruddy Duck -44%Wood Duck +132%

Swifts Apodidae

Black Swift -4%Vaux's Swift +34%White-throated Swift -72%

Herons, Egrets & Bitterns Ardeidae

American Bittern -34%Black-crowned Night Heron +119%Great Blue Heron +70%Great Egret 40×Green Heron +38%Snowy Egret +138%Western Cattle-Egret +256%

Waxwings Bombycillidae

Cedar Waxwing -78%

Nightjars & Nighthawks Caprimulgidae

Common Nighthawk -75%Common Poorwill +54%Lesser Nighthawk -27%

Cardinals & Grosbeaks Cardinalidae

Black-headed Grosbeak -16%Blue Grosbeak +63%Lazuli Bunting +52%Western Tanager -22%

New World Vultures Cathartidae

Turkey Vulture +172%

Treecreepers Certhiidae

Brown Creeper +21%

Plovers & Lapwings Charadriidae

Dippers Cinclidae

American Dipper +50%

Pigeons & Doves Columbidae

Band-tailed Pigeon +36%Eurasian Collared-Dove 170×Mourning Dove -2%Rock Pigeon +30%Spotted Dove -82%

Crows, Jays & Magpies Corvidae

American Crow +38%California Scrub-Jay -1%Clark's Nutcracker -95%Common Raven +424%Pinyon Jay -7%Steller's Jay -23%Yellow-billed Magpie -34%

Cuckoos, Roadrunners & Anis Cuculidae

Greater Roadrunner -86%

Falcons & Caracaras Falconidae

American Kestrel -76%Peregrine Falcon +136%Prairie Falcon +224%

Finches Fringillidae

American Goldfinch +54%Cassin's Finch -87%House Finch -23%Lawrence's Goldfinch +19%Lesser Goldfinch +75%Pine Siskin -40%Purple Finch +22%Red Crossbill -42%

Swallows & Martins Hirundinidae

Bank Swallow -95%Barn Swallow +206%Cliff Swallow -14%Northern Rough-winged Swallow -65%Purple Martin +14%Tree Swallow +158%Violet-green Swallow -60%

Blackbirds & Orioles Icteridae

Brewer's Blackbird -77%Brown-headed Cowbird +49%Bullock's Oriole -37%Great-tailed Grackle 12×Hooded Oriole +579%Red-winged Blackbird -52%Scott's Oriole -48%Tricolored Blackbird -48%Western Meadowlark -77%Yellow-headed Blackbird -98%

Yellow-breasted Chat Icteriidae

Yellow-breasted Chat +84%

Shrikes Laniidae

Loggerhead Shrike -85%

Gulls, Terns & Skimmers Laridae

Black Tern -75%California Gull 74×Caspian Tern -20%Forster's Tern -60%Ring-billed Gull -95%Western Gull -72%

Mockingbirds & Thrashers Mimidae

California Thrasher +15%LeConte's Thrasher -93%Northern Mockingbird +41%

New World Quail Odontophoridae

California Quail +34%Mountain Quail +11%

Osprey Pandionidae

Chickadees & Titmice Paridae

Chestnut-backed Chickadee -46%Mountain Chickadee -77%Oak Titmouse +61%

Wood-Warblers Parulidae

Black-throated Gray Warbler +881%Common Yellowthroat 20×Hermit Warbler +286%MacGillivray's Warbler -42%Nashville Warbler +67%Orange-crowned Warbler +160%Wilson's Warbler +106%Yellow Warbler +14%

New World Sparrows Passerellidae

Bell's Sparrow -44%Black-chinned Sparrow -78%Black-throated Sparrow -83%Brewer's Sparrow -94%California Towhee +13%Chipping Sparrow -74%Fox Sparrow -83%Grasshopper Sparrow +615%Green-tailed Towhee -97%Lark Sparrow -46%Rufous-crowned Sparrow +620%Savannah Sparrow -44%Song Sparrow +135%Spotted Towhee +38%White-crowned Sparrow -86%

Old World Sparrows Passeridae

House Sparrow -57%

Pelicans Pelecanidae

American White Pelican +7%Brown Pelican 24×

Cormorants Phalacrocoracidae

Double-crested Cormorant +599%

Pheasants, Grouse & Turkeys Phasianidae

Ring-necked Pheasant -93%Wild Turkey 35×

Woodpeckers Picidae

Acorn Woodpecker +88%Downy Woodpecker +18%Hairy Woodpecker +18%Lewis's Woodpecker -74%Nuttall's Woodpecker +65%Pileated Woodpecker +5%Red-breasted Sapsucker -56%White-headed Woodpecker -82%

Grebes Podicipedidae

Clark's Grebe +107%Eared Grebe -92%Pied-billed Grebe -14%Western Grebe +67%

Gnatcatchers Polioptilidae

Blue-gray Gnatcatcher +860%California Gnatcatcher +88%

Silky-flycatchers Ptiliogonatidae

Phainopepla +35%

Rails, Gallinules & Coots Rallidae

American Coot -48%Common Gallinule -86%Virginia Rail -13%

Avocets & Stilts Recurvirostridae

American Avocet -80%Black-necked Stilt -98%

Kinglets Regulidae

Golden-crowned Kinglet +198%

Sandpipers & Allies Scolopacidae

Long-billed Curlew -60%Spotted Sandpiper -54%Wilson's Snipe +69%

Nuthatches Sittidae

Pygmy Nuthatch -66%Red-breasted Nuthatch +55%White-breasted Nuthatch +93%

Owls Strigidae

Burrowing Owl -94%Great Horned Owl +158%Northern Pygmy-Owl -50%Western Screech-Owl -26%

Starlings & Mynas Sturnidae

European Starling +36%

Sylviid Warblers Sylviidae

Ibises & Spoonbills Threskiornithidae

White-faced Ibis 58×

Hummingbirds Trochilidae

Allen's Hummingbird +351%Anna's Hummingbird +175%Black-chinned Hummingbird -44%Calliope Hummingbird -89%Costa's Hummingbird +75%

Wrens Troglodytidae

Bewick's Wren +25%Cactus Wren -9%Canyon Wren -32%Marsh Wren +864%Northern House Wren +26%Pacific Wren 15×Rock Wren -11%

Thrushes Turdidae

American Robin +109%Hermit Thrush +156%Mountain Bluebird -86%Swainson's Thrush +29%Townsend's Solitaire -84%Varied Thrush +58%Western Bluebird -3%

Tyrant Flycatchers Tyrannidae

Ash-throated Flycatcher +102%Black Phoebe +346%Cassin's Kingbird +268%Dusky Flycatcher -1%Gray Flycatcher +41%Hammond's Flycatcher +102%Olive-sided Flycatcher -56%Say's Phoebe +102%Western Kingbird +25%Western Wood-Pewee -67%Willow Flycatcher +11%

Barn-Owls Tytonidae

American Barn Owl -52%

Vireos Vireonidae

Bell's Vireo +481%Cassin's Vireo +155%Hutton's Vireo -11%Warbling Vireo +118%

Source: USGS North American Breeding Bird Survey, retrieved 2026-05-22.