BirdAnalyst
Bird Conservation Region 31

Peninsular Florida

An ecological region spanning Florida, with 82 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 Peninsular Florida: down 98% 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 →

Black-bellied Whistling-Duck has surged in Peninsular Florida: up 92× on the route-weighted index since 1995.

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 →

Burrowing Owl has collapsed in Peninsular Florida: 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 →

Crested Caracara has surged in Peninsular Florida: up 13× on the route-weighted index since 1987.

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 →

Double-crested Cormorant has collapsed in Peninsular Florida: down 95% 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 →

White-winged Dove has surged in Peninsular Florida: up 931% on the route-weighted index since 1979.

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 →

-83%

Game birds

2 species
-78%

Seabirds

1 species
-77%

Grassland birds

2 species
-61%

Generalists

15 species
-60%

Wetland birds

37 species
-59%

Shorebirds

4 species
-18%

Aerial insectivores

11 species
-13%

Waterfowl

6 species
+3%

Birds of prey

18 species
+7%

Forest birds

43 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 +286%Cooper's Hawk -17%Mississippi Kite +116%Red-shouldered Hawk +72%Red-tailed Hawk -31%Short-tailed Hawk +58%Snail Kite -94%Swallow-tailed Kite +307%

Kingfishers Alcedinidae

Belted Kingfisher -87%

Ducks, Geese & Waterfowl Anatidae

Black-bellied Whistling-Duck 92×Fulvous Whistling-Duck -10%Mallard -61%Mottled Duck -79%Muscovy Duck +345%Wood Duck -87%

Anhingas Anhingidae

Anhinga -19%

Swifts Apodidae

Chimney Swift -32%

Limpkin Aramidae

Limpkin -42%

Herons, Egrets & Bitterns Ardeidae

Black-crowned Night Heron +15%Great Blue Heron -46%Great Egret -62%Green Heron -68%Least Bittern -67%Little Blue Heron -71%Reddish Egret -64%Snowy Egret -63%Tricolored Heron -71%Western Cattle-Egret -65%Yellow-crowned Night Heron -90%

Nightjars & Nighthawks Caprimulgidae

Chuck-will's-widow -15%Common Nighthawk -67%

Cardinals & Grosbeaks Cardinalidae

Blue Grosbeak +90%Indigo Bunting -51%Northern Cardinal -13%Painted Bunting -81%Summer Tanager -11%

New World Vultures Cathartidae

Black Vulture +103%Turkey Vulture -37%

Plovers & Lapwings Charadriidae

Killdeer -66%Wilson's Plover -24%

Storks Ciconiidae

Wood Stork -54%

Pigeons & Doves Columbidae

Common Ground Dove -78%Eurasian Collared-Dove +320%Mourning Dove +153%Rock Pigeon -20%White-crowned Pigeon -79%White-winged Dove +931%

Crows, Jays & Magpies Corvidae

American Crow +49%Blue Jay -43%Fish Crow -47%Florida Scrub-Jay -79%

Cuckoos, Roadrunners & Anis Cuculidae

Mangrove Cuckoo -65%Smooth-billed Ani -95%Yellow-billed Cuckoo -87%

Falcons & Caracaras Falconidae

American Kestrel -36%Crested Caracara 13×

Frigatebirds Fregatidae

Magnificent Frigatebird -78%

Finches Fringillidae

House Finch +382%

Cranes Gruidae

Sandhill Crane +200%

Swallows & Martins Hirundinidae

Barn Swallow +500%Northern Rough-winged Swallow -62%Purple Martin +39%

Blackbirds & Orioles Icteridae

Boat-tailed Grackle -49%Brown-headed Cowbird +525%Common Grackle -58%Eastern Meadowlark -76%Orchard Oriole -69%Red-winged Blackbird -76%Spot-breasted Oriole -86%

Yellow-breasted Chat Icteriidae

Yellow-breasted Chat -60%

Shrikes Laniidae

Loggerhead Shrike -84%

Gulls, Terns & Skimmers Laridae

Black Skimmer +61%Caspian Tern -23%Forster's Tern +34%Herring Gull +167%Laughing Gull -18%Least Tern -98%Ring-billed Gull -61%Royal Tern -89%

Mockingbirds & Thrashers Mimidae

Brown Thrasher -45%Gray Catbird -68%Northern Mockingbird -71%

New World Quail Odontophoridae

Northern Bobwhite -76%

Osprey Pandionidae

Osprey +406%

Chickadees & Titmice Paridae

Carolina Chickadee +366%Tufted Titmouse +142%

Wood-Warblers Parulidae

Common Yellowthroat -24%Hooded Warbler -43%Northern Parula +347%Pine Warbler +36%Prairie Warbler -64%Prothonotary Warbler -50%Yellow Warbler -73%Yellow-throated Warbler +11%

New World Sparrows Passerellidae

Bachman's Sparrow -57%Eastern Towhee -66%

Old World Sparrows Passeridae

House Sparrow -83%

Pelicans Pelecanidae

Brown Pelican -63%

Cormorants Phalacrocoracidae

Double-crested Cormorant -95%

Pheasants, Grouse & Turkeys Phasianidae

Wild Turkey +803%

Woodpeckers Picidae

Downy Woodpecker +318%Hairy Woodpecker -46%Pileated Woodpecker +121%Red-bellied Woodpecker +29%Red-cockaded Woodpecker +374%Red-headed Woodpecker -69%

Grebes Podicipedidae

Pied-billed Grebe -89%

Gnatcatchers Polioptilidae

Blue-gray Gnatcatcher +322%

Parrots Psittacidae

Monk Parakeet +35%

Rails, Gallinules & Coots Rallidae

American Coot -92%Clapper Rail -30%Common Gallinule -50%King Rail -91%Purple Gallinule -73%

Avocets & Stilts Recurvirostridae

Black-necked Stilt -89%

Sandpipers & Allies Scolopacidae

Willet -61%

Nuthatches Sittidae

Brown-headed Nuthatch -30%

Owls Strigidae

Barred Owl +66%Burrowing Owl -97%Eastern Screech-Owl -68%Great Horned Owl -6%

Starlings & Mynas Sturnidae

Common Myna +3%European Starling -28%

Ibises & Spoonbills Threskiornithidae

Glossy Ibis +283%Roseate Spoonbill +95%White Ibis -55%

Hummingbirds Trochilidae

Ruby-throated Hummingbird -75%

Wrens Troglodytidae

Carolina Wren +18%

Thrushes Turdidae

Eastern Bluebird -29%

Tyrant Flycatchers Tyrannidae

Acadian Flycatcher -83%Eastern Kingbird -92%Eastern Wood-Pewee -89%Gray Kingbird -88%Great Crested Flycatcher +45%

Barn-Owls Tytonidae

American Barn Owl -58%

Vireos Vireonidae

Black-whiskered Vireo -85%Red-eyed Vireo -58%White-eyed Vireo +19%Yellow-throated Vireo +244%

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