BirdAnalyst
Bird Conservation Region 14

Atlantic Northern Forest

An ecological region spanning Connecticut, Maine, Massachusetts, New-hampshire, New-york, Vermont, with 156 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 →

Eastern Meadowlark has collapsed in Atlantic Northern Forest: down 99% 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 →

Tufted Titmouse has surged in Atlantic Northern Forest: up 108× on the route-weighted index since 1974.

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 →

Vesper Sparrow has collapsed in Atlantic Northern Forest: 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 →

Pine Warbler has surged in Atlantic Northern Forest: up 60× 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 →

Herring Gull has collapsed in Atlantic Northern Forest: 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 →

Northern Cardinal has surged in Atlantic Northern Forest: up 44× 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 →

-68%

Shorebirds

4 species
-64%

Wetland birds

17 species
-59%

Aerial insectivores

18 species
-52%

Generalists

10 species
-48%

Grassland birds

7 species
-4%

Forest birds

85 species
+31%

Birds of prey

15 species
+303%

Game birds

4 species
+323%

Waterfowl

8 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

American Goshawk -10%Bald Eagle +469%Broad-winged Hawk +250%Cooper's Hawk +101%Northern Harrier -52%Red-shouldered Hawk +180%Red-tailed Hawk +36%Sharp-shinned Hawk +29%

Larks Alaudidae

Horned Lark -93%

Kingfishers Alcedinidae

Belted Kingfisher -55%

Ducks, Geese & Waterfowl Anatidae

American Black Duck -93%Canada Goose 41×Common Goldeneye -84%Common Merganser +168%Hooded Merganser +484%Mallard +362%Ring-necked Duck -74%Wood Duck +35%

Swifts Apodidae

Chimney Swift -60%

Herons, Egrets & Bitterns Ardeidae

American Bittern -36%Black-crowned Night Heron -33%Great Blue Heron +42%Green Heron -66%

Waxwings Bombycillidae

Cedar Waxwing +35%

Nightjars & Nighthawks Caprimulgidae

Common Nighthawk -45%Eastern Whip-poor-will -75%

Cardinals & Grosbeaks Cardinalidae

Indigo Bunting +87%Northern Cardinal 44×Rose-breasted Grosbeak -59%Scarlet Tanager -35%

New World Vultures Cathartidae

Turkey Vulture 18×

Treecreepers Certhiidae

Brown Creeper +381%

Plovers & Lapwings Charadriidae

Killdeer -90%

Pigeons & Doves Columbidae

Mourning Dove +588%Rock Pigeon +28%

Crows, Jays & Magpies Corvidae

American Crow +40%Blue Jay -17%Canada Jay -11%Common Raven +401%

Cuckoos, Roadrunners & Anis Cuculidae

Black-billed Cuckoo -76%Yellow-billed Cuckoo +307%

Falcons & Caracaras Falconidae

American Kestrel -59%Merlin +195%

Finches Fringillidae

American Goldfinch -33%Evening Grosbeak -94%House Finch +311%Pine Siskin -90%Purple Finch -71%Red Crossbill +309%White-winged Crossbill +179%

Loons Gaviidae

Common Loon +211%

Swallows & Martins Hirundinidae

Bank Swallow -94%Barn Swallow -83%Cliff Swallow -94%Northern Rough-winged Swallow -47%Purple Martin -79%Tree Swallow -73%

Blackbirds & Orioles Icteridae

Baltimore Oriole -76%Bobolink -75%Brown-headed Cowbird -80%Common Grackle -59%Eastern Meadowlark -99%Red-winged Blackbird -73%Rusty Blackbird -79%

Gulls, Terns & Skimmers Laridae

Common Tern +304%Great Black-backed Gull -59%Herring Gull -95%Ring-billed Gull +959%

Mockingbirds & Thrashers Mimidae

Brown Thrasher -85%Gray Catbird -10%Northern Mockingbird +117%

New World Quail Odontophoridae

Northern Bobwhite +14%

Osprey Pandionidae

Osprey +290%

Chickadees & Titmice Paridae

Black-capped Chickadee +82%Boreal Chickadee -90%Tufted Titmouse 108×

Wood-Warblers Parulidae

American Redstart -25%Bay-breasted Warbler -82%Black-and-white Warbler +72%Black-throated Blue Warbler +134%Black-throated Green Warbler +139%Blackburnian Warbler +118%Blackpoll Warbler -91%Blue-winged Warbler +4%Canada Warbler -80%Cape May Warbler -54%Cerulean Warbler +79%Chestnut-sided Warbler +15%Common Yellowthroat -2%Golden-winged Warbler -84%Louisiana Waterthrush +177%Magnolia Warbler -37%Mourning Warbler -2%Nashville Warbler -37%Northern Parula +685%Northern Waterthrush -37%Ovenbird +78%Palm Warbler +68%Pine Warbler 60×Prairie Warbler +449%Tennessee Warbler -63%Wilson's Warbler -91%Worm-eating Warbler +1%Yellow Warbler +2%

New World Sparrows Passerellidae

Chipping Sparrow +34%Eastern Towhee -94%Field Sparrow -88%Fox Sparrow -7%Grasshopper Sparrow -64%Lincoln's Sparrow -83%Savannah Sparrow -29%Song Sparrow -21%Swamp Sparrow +9%Vesper Sparrow -97%White-throated Sparrow -77%

Old World Sparrows Passeridae

House Sparrow -70%

Cormorants Phalacrocoracidae

Double-crested Cormorant +93%

Pheasants, Grouse & Turkeys Phasianidae

Ring-necked Pheasant -57%Ruffed Grouse -37%Wild Turkey 83×

Woodpeckers Picidae

Black-backed Woodpecker -47%Downy Woodpecker +61%Hairy Woodpecker +127%Pileated Woodpecker +429%Red-bellied Woodpecker 48×Yellow-bellied Sapsucker +75%

Grebes Podicipedidae

Pied-billed Grebe -42%

Gnatcatchers Polioptilidae

Blue-gray Gnatcatcher +75%

Rails, Gallinules & Coots Rallidae

Sora -24%Virginia Rail -81%

Kinglets Regulidae

Golden-crowned Kinglet +113%Ruby-crowned Kinglet -61%

Sandpipers & Allies Scolopacidae

American Woodcock -83%Spotted Sandpiper -85%Upland Sandpiper -74%Wilson's Snipe -13%

Nuthatches Sittidae

Red-breasted Nuthatch +234%White-breasted Nuthatch +105%

Owls Strigidae

Barred Owl +247%Great Horned Owl +14%Northern Saw-whet Owl -17%

Starlings & Mynas Sturnidae

European Starling -79%

Hummingbirds Trochilidae

Ruby-throated Hummingbird +34%

Wrens Troglodytidae

Carolina Wren 27×Marsh Wren +92%Northern House Wren +250%Winter Wren +107%

Thrushes Turdidae

American Robin -42%Bicknell's Thrush -52%Eastern Bluebird +134%Hermit Thrush +29%Swainson's Thrush -18%Veery -55%Wood Thrush -87%

Tyrant Flycatchers Tyrannidae

Alder Flycatcher +55%Eastern Kingbird -77%Eastern Phoebe +23%Eastern Wood-Pewee +15%Great Crested Flycatcher -18%Least Flycatcher -67%Olive-sided Flycatcher -91%Willow Flycatcher +432%Yellow-bellied Flycatcher -81%

Vireos Vireonidae

Blue-headed Vireo +387%Philadelphia Vireo +32%Red-eyed Vireo +116%Warbling Vireo +93%Yellow-throated Vireo +16%

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