BirdAnalyst
Bird Conservation Region 27

Southeastern Coastal Plain

An ecological region spanning Alabama, Florida, Georgia, Kentucky, Louisiana, Mississippi, North-carolina, South-carolina, Tennessee, Virginia, with 346 survey routes. BCRs are the natural unit for bird trends.

What Is Moving HereNotable signalsLong-arc shifts the engine flags automatically — sustained declines or increases large enough to stand out from year-to-year noise.Full methodology →

long arc declinecomputed indexTrend sourceWhether the figure is our own computed route-weighted index or an official USGS modeled estimate. The current build labels every trend as computed.Full methodology →

Least Tern has collapsed in Southeastern Coastal Plain: down 97% on the route-weighted index since 1968.

long arc increasecomputed indexTrend sourceWhether the figure is our own computed route-weighted index or an official USGS modeled estimate. The current build labels every trend as computed.Full methodology →

Mississippi Kite has surged in Southeastern Coastal Plain: up 19× on the route-weighted index since 1968.

long arc declinecomputed indexTrend sourceWhether the figure is our own computed route-weighted index or an official USGS modeled estimate. The current build labels every trend as computed.Full methodology →

Seaside Sparrow has collapsed in Southeastern Coastal Plain: down 96% on the route-weighted index since 1968.

long arc increasecomputed indexTrend sourceWhether the figure is our own computed route-weighted index or an official USGS modeled estimate. The current build labels every trend as computed.Full methodology →

Eurasian Collared-Dove has surged in Southeastern Coastal Plain: up 805% on the route-weighted index since 1994.

long arc declinecomputed indexTrend sourceWhether the figure is our own computed route-weighted index or an official USGS modeled estimate. The current build labels every trend as computed.Full methodology →

Marsh Wren has collapsed in Southeastern Coastal Plain: down 96% on the route-weighted index since 1968.

long arc increasecomputed indexTrend sourceWhether the figure is our own computed route-weighted index or an official USGS modeled estimate. The current build labels every trend as computed.Full methodology →

Wild Turkey has surged in Southeastern Coastal Plain: up 705% on the route-weighted index since 1969.

How Guilds Are FaringGuild trendA mean-index aggregate across the species in this group — the structural direction of the guild, with individual-species noise smoothed out.Full methodology →

-89%

Game birds

2 species
-83%

Grassland birds

7 species
-49%

Generalists

13 species
-40%

Wetland birds

40 species
-1%

Aerial insectivores

16 species
+23%

Forest birds

63 species
+114%

Shorebirds

6 species
+304%

Birds of prey

15 species
+585%

Waterfowl

6 species

Survey Routes

Species By FamilyTrendPercent change in the route-weighted abundance index between a smoothed baseline window and the most recent one. It tracks direction, not absolute population.Full methodology →

Hawks, Eagles & Kites Accipitridae

Bald Eagle +611%Broad-winged Hawk +78%Cooper's Hawk +134%Mississippi Kite 19×Red-shouldered Hawk +429%Red-tailed Hawk +202%Sharp-shinned Hawk -26%Swallow-tailed Kite +763%

Larks Alaudidae

Horned Lark +347%

Kingfishers Alcedinidae

Belted Kingfisher -70%

Ducks, Geese & Waterfowl Anatidae

American Black Duck -85%Black-bellied Whistling-Duck +564%Canada Goose 92×Mallard +784%Mottled Duck -48%Wood Duck +70%

Anhingas Anhingidae

Anhinga +141%

Swifts Apodidae

Chimney Swift -63%

Herons, Egrets & Bitterns Ardeidae

Black-crowned Night Heron -80%Great Blue Heron +43%Great Egret -50%Green Heron -52%Least Bittern -72%Little Blue Heron -62%Reddish Egret -78%Snowy Egret -77%Tricolored Heron -87%Western Cattle-Egret +26%Yellow-crowned Night Heron -2%

Waxwings Bombycillidae

Cedar Waxwing +96%

Nightjars & Nighthawks Caprimulgidae

Chuck-will's-widow -45%Common Nighthawk -67%Eastern Whip-poor-will -6%

Cardinals & Grosbeaks Cardinalidae

Blue Grosbeak +100%Dickcissel -16%Indigo Bunting +12%Northern Cardinal -2%Painted Bunting -30%Scarlet Tanager +86%Summer Tanager +21%

New World Vultures Cathartidae

Black Vulture +174%Turkey Vulture +580%

Plovers & Lapwings Charadriidae

Killdeer +188%Wilson's Plover -60%

Storks Ciconiidae

Wood Stork +1%

Pigeons & Doves Columbidae

Common Ground Dove +31%Eurasian Collared-Dove +805%Mourning Dove +7%Rock Pigeon -9%White-winged Dove 15×

Crows, Jays & Magpies Corvidae

American Crow +40%Blue Jay -39%Fish Crow -9%

Cuckoos, Roadrunners & Anis Cuculidae

Black-billed Cuckoo -78%Yellow-billed Cuckoo +5%

Falcons & Caracaras Falconidae

American Kestrel -52%

Finches Fringillidae

American Goldfinch +205%House Finch 350×

Cranes Gruidae

Sandhill Crane -57%

Oystercatchers Haematopodidae

American Oystercatcher -66%

Swallows & Martins Hirundinidae

Bank Swallow -46%Barn Swallow +146%Cliff Swallow 184×Northern Rough-winged Swallow +21%Purple Martin -24%Tree Swallow +529%

Blackbirds & Orioles Icteridae

Baltimore Oriole -92%Boat-tailed Grackle -35%Brown-headed Cowbird +134%Common Grackle -80%Eastern Meadowlark -85%Orchard Oriole -51%Red-winged Blackbird -63%

Yellow-breasted Chat Icteriidae

Yellow-breasted Chat -2%

Shrikes Laniidae

Loggerhead Shrike -84%

Gulls, Terns & Skimmers Laridae

Black Skimmer -82%Caspian Tern -31%Common Tern +5%Forster's Tern -74%Great Black-backed Gull -75%Gull-billed Tern -75%Herring Gull -93%Laughing Gull +349%Least Tern -97%Ring-billed Gull -93%Royal Tern -66%Sandwich Tern -36%

Mockingbirds & Thrashers Mimidae

Brown Thrasher -15%Gray Catbird -18%Northern Mockingbird -32%

New World Quail Odontophoridae

Northern Bobwhite -87%

Osprey Pandionidae

Osprey +150%

Chickadees & Titmice Paridae

Carolina Chickadee +63%Tufted Titmouse +128%

Wood-Warblers Parulidae

American Redstart -2%Black-and-white Warbler +387%Black-throated Green Warbler -77%Blue-winged Warbler -81%Cerulean Warbler -23%Common Yellowthroat -12%Hooded Warbler +136%Kentucky Warbler +90%Louisiana Waterthrush +178%Northern Parula +150%Ovenbird +366%Pine Warbler +223%Prairie Warbler +8%Prothonotary Warbler +56%Swainson's Warbler 26×Worm-eating Warbler +775%Yellow Warbler -89%Yellow-throated Warbler +222%

New World Sparrows Passerellidae

Bachman's Sparrow -6%Chipping Sparrow +204%Eastern Towhee -40%Field Sparrow -44%Grasshopper Sparrow -31%Henslow's Sparrow -87%Lark Sparrow +180%Seaside Sparrow -96%Song Sparrow -53%

Old World Sparrows Passeridae

House Sparrow -90%

Pelicans Pelecanidae

Brown Pelican +133%

Cormorants Phalacrocoracidae

Double-crested Cormorant 16×

Pheasants, Grouse & Turkeys Phasianidae

Wild Turkey +705%

Woodpeckers Picidae

Downy Woodpecker +99%Hairy Woodpecker -28%Pileated Woodpecker +196%Red-bellied Woodpecker +54%Red-cockaded Woodpecker +134%Red-headed Woodpecker +15%

Grebes Podicipedidae

Pied-billed Grebe -48%

Gnatcatchers Polioptilidae

Blue-gray Gnatcatcher +440%

Rails, Gallinules & Coots Rallidae

American Coot -79%Clapper Rail -61%Common Gallinule +59%King Rail -65%Purple Gallinule -94%

Avocets & Stilts Recurvirostridae

Black-necked Stilt +4%

Sandpipers & Allies Scolopacidae

American Woodcock -74%Willet -82%

Nuthatches Sittidae

Brown-headed Nuthatch +68%White-breasted Nuthatch +391%

Owls Strigidae

Barred Owl +125%Eastern Screech-Owl -58%Great Horned Owl +497%

Starlings & Mynas Sturnidae

European Starling -43%

Ibises & Spoonbills Threskiornithidae

Glossy Ibis -94%White Ibis -45%

Hummingbirds Trochilidae

Ruby-throated Hummingbird +28%

Wrens Troglodytidae

Bewick's Wren -96%Carolina Wren +147%Marsh Wren -96%Northern House Wren +267%

Thrushes Turdidae

American Robin +5%Eastern Bluebird +229%Wood Thrush -50%

Tyrant Flycatchers Tyrannidae

Acadian Flycatcher +161%Eastern Kingbird -39%Eastern Phoebe +696%Eastern Wood-Pewee +11%Gray Kingbird -73%Great Crested Flycatcher +78%

Vireos Vireonidae

Blue-headed Vireo -32%Red-eyed Vireo +52%Warbling Vireo +0%White-eyed Vireo +135%Yellow-throated Vireo +189%

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