BirdAnalyst
State · BBS 2025 Release · 1966–2024

Connecticut Breeding Birds

163 species recorded across 20 survey routes, 1966 to 2024. Browse by family or guild below.

Connecticut Bird Population Trends

long arc declinecomputed index

Eastern Meadowlark has collapsed in Connecticut: down 98% on the route-weighted index since 1968.

long arc declinecomputed index

Brown Thrasher has collapsed in Connecticut: down 97% on the route-weighted index since 1968.

long arc declinecomputed index

Field Sparrow has collapsed in Connecticut: down 96% on the route-weighted index since 1968.

long arc declinecomputed index

Northern Bobwhite has collapsed in Connecticut: down 96% on the route-weighted index since 1968.

long arc declinecomputed index

Ring-necked Pheasant has collapsed in Connecticut: down 94% on the route-weighted index since 1968.

long arc declinecomputed index

Rock Pigeon has collapsed in Connecticut: down 92% on the route-weighted index since 1968.

How Bird Guilds Are Faring in Connecticut

-92%

Wetland birds

10 species
-86%

Grassland birds

3 species
-57%

Generalists

11 species
-55%

Game birds

4 species
-48%

Shorebirds

3 species
-29%

Aerial insectivores

16 species
-16%

Forest birds

65 species
+47%

Waterfowl

7 species
+141%

Birds of prey

11 species

Connecticut Bird Survey Routes

Browse Connecticut Birds By Family

Each species links to its trend in Connecticut.

Hawks, Eagles & Kites Accipitridae

Broad-winged Hawk +19%Cooper's Hawk +38%Red-shouldered Hawk 16×Red-tailed Hawk +397%Sharp-shinned Hawk +28%

Kingfishers Alcedinidae

Belted Kingfisher -53%

Ducks, Geese & Waterfowl Anatidae

American Black Duck -88%Canada Goose -12%Common Merganser -15%Hooded Merganser -82%Mallard -16%Mute Swan +11%Wood Duck -13%

Swifts Apodidae

Chimney Swift +34%

Herons, Egrets & Bitterns Ardeidae

Black-crowned Night Heron -5%Great Blue Heron +768%Green Heron -46%

Waxwings Bombycillidae

Cedar Waxwing +237%

Nightjars & Nighthawks Caprimulgidae

Eastern Whip-poor-will -64%

Cardinals & Grosbeaks Cardinalidae

Indigo Bunting -14%Northern Cardinal +279%Rose-breasted Grosbeak -72%Scarlet Tanager -21%

New World Vultures Cathartidae

Turkey Vulture +426%

Treecreepers Certhiidae

Brown Creeper +21%

Plovers & Lapwings Charadriidae

Killdeer -42%

Pigeons & Doves Columbidae

Mourning Dove +39%Rock Pigeon -92%

Crows, Jays & Magpies Corvidae

American Crow -25%Blue Jay -61%Common Raven +704%Fish Crow 15×

Cuckoos, Roadrunners & Anis Cuculidae

Black-billed Cuckoo -71%Yellow-billed Cuckoo -72%

Falcons & Caracaras Falconidae

American Kestrel -65%

Finches Fringillidae

American Goldfinch +117%House Finch +568%Purple Finch -91%

Swallows & Martins Hirundinidae

Bank Swallow +77%Barn Swallow +18%Cliff Swallow -42%Northern Rough-winged Swallow +295%Purple Martin -22%Tree Swallow +13%

Blackbirds & Orioles Icteridae

Baltimore Oriole -79%Bobolink -72%Brown-headed Cowbird -33%Common Grackle -71%Eastern Meadowlark -98%Orchard Oriole +25%Red-winged Blackbird -75%

Gulls, Terns & Skimmers Laridae

Great Black-backed Gull +7%Herring Gull -18%Ring-billed Gull -19%

Mockingbirds & Thrashers Mimidae

Brown Thrasher -97%Gray Catbird +55%Northern Mockingbird +290%

New World Quail Odontophoridae

Northern Bobwhite -96%

Osprey Pandionidae

Osprey +245%

Chickadees & Titmice Paridae

Black-capped Chickadee +36%Tufted Titmouse +358%

Wood-Warblers Parulidae

American Redstart +38%Black-and-white Warbler -42%Black-throated Blue Warbler +13%Black-throated Green Warbler -29%Blackburnian Warbler -9%Blue-winged Warbler -76%Canada Warbler -85%Cerulean Warbler +43%Chestnut-sided Warbler -62%Common Yellowthroat -20%Hooded Warbler +234%Louisiana Waterthrush +235%Magnolia Warbler +20%Northern Parula +101%Northern Waterthrush -54%Ovenbird +70%Pine Warbler 32×Prairie Warbler -73%Worm-eating Warbler +568%Yellow Warbler +103%

New World Sparrows Passerellidae

Chipping Sparrow +30%Eastern Towhee -89%Field Sparrow -96%Savannah Sparrow -12%Song Sparrow -33%Swamp Sparrow +21%White-throated Sparrow -64%

Old World Sparrows Passeridae

House Sparrow -30%

Cormorants Phalacrocoracidae

Double-crested Cormorant -55%

Pheasants, Grouse & Turkeys Phasianidae

Ring-necked Pheasant -94%Ruffed Grouse -65%Wild Turkey +832%

Woodpeckers Picidae

Downy Woodpecker +11%Hairy Woodpecker -20%Pileated Woodpecker +159%Red-bellied Woodpecker 24×Yellow-bellied Sapsucker +426%

Gnatcatchers Polioptilidae

Blue-gray Gnatcatcher 11×

Sandpipers & Allies Scolopacidae

American Woodcock -61%Spotted Sandpiper +11%

Nuthatches Sittidae

Red-breasted Nuthatch -59%White-breasted Nuthatch +152%

Owls Strigidae

Barred Owl +65%Eastern Screech-Owl -27%Great Horned Owl +61%

Starlings & Mynas Sturnidae

European Starling -63%

Hummingbirds Trochilidae

Ruby-throated Hummingbird +126%

Wrens Troglodytidae

Carolina Wren 33×Marsh Wren +445%Northern House Wren +11%Winter Wren +32%

Thrushes Turdidae

American Robin -12%Eastern Bluebird +283%Hermit Thrush -39%Veery +16%Wood Thrush -52%

Tyrant Flycatchers Tyrannidae

Acadian Flycatcher +121%Alder Flycatcher +66%Eastern Kingbird -79%Eastern Phoebe +16%Eastern Wood-Pewee +31%Great Crested Flycatcher +28%Least Flycatcher -84%Willow Flycatcher +30%

Vireos Vireonidae

Blue-headed Vireo +27%Red-eyed Vireo +96%Warbling Vireo +187%White-eyed Vireo -3%Yellow-throated Vireo +56%

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