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 Here
Eastern Meadowlark has collapsed in Atlantic Northern Forest: down 99% on the route-weighted index since 1968.
Tufted Titmouse has surged in Atlantic Northern Forest: up 108× on the route-weighted index since 1974.
Vesper Sparrow has collapsed in Atlantic Northern Forest: down 97% on the route-weighted index since 1968.
Pine Warbler has surged in Atlantic Northern Forest: up 60× on the route-weighted index since 1968.
Herring Gull has collapsed in Atlantic Northern Forest: down 95% on the route-weighted index since 1968.
Northern Cardinal has surged in Atlantic Northern Forest: up 44× on the route-weighted index since 1969.
How Guilds Are Faring
Survey Routes
Species By Family
Hawks, Eagles & Kites Accipitridae
Larks Alaudidae
Kingfishers Alcedinidae
Ducks, Geese & Waterfowl Anatidae
Swifts Apodidae
Herons, Egrets & Bitterns Ardeidae
Waxwings Bombycillidae
Cardinals & Grosbeaks Cardinalidae
New World Vultures Cathartidae
Treecreepers Certhiidae
Plovers & Lapwings Charadriidae
Finches Fringillidae
Loons Gaviidae
Swallows & Martins Hirundinidae
Blackbirds & Orioles Icteridae
Gulls, Terns & Skimmers Laridae
New World Quail Odontophoridae
Osprey Pandionidae
Wood-Warblers Parulidae
New World Sparrows Passerellidae
Old World Sparrows Passeridae
Cormorants Phalacrocoracidae
Woodpeckers Picidae
Grebes Podicipedidae
Gnatcatchers Polioptilidae
Sandpipers & Allies Scolopacidae
Starlings & Mynas Sturnidae
Hummingbirds Trochilidae
Thrushes Turdidae
Tyrant Flycatchers Tyrannidae
Source: USGS North American Breeding Bird Survey, retrieved 2026-05-22.