State · BBS 2025 Release · 1966–2024
Massachusetts Breeding Birds
176 species recorded across 32 survey routes, 1966 to 2024. Browse by family or guild below.
Massachusetts Bird Population TrendsNotable 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 →
Northern Bobwhite has collapsed in Massachusetts: down 100% 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 Massachusetts: up 113× on the route-weighted index since 1970.
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 Massachusetts: 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 →
Carolina Wren has surged in Massachusetts: up 67× on the route-weighted index since 1971.
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 →
White-throated Sparrow has collapsed in Massachusetts: 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 →
Northern Cardinal has surged in Massachusetts: up 60× on the route-weighted index since 1969.
How Bird Guilds Are Faring in MassachusettsGuild trendA mean-index aggregate across the species in this group — the structural direction of the guild, with individual-species noise smoothed out.Full methodology →
Massachusetts Bird Survey Routes
Browse Massachusetts Birds 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 →
Each species links to its trend in Massachusetts.
Hawks, Eagles & Kites Accipitridae
Kingfishers Alcedinidae
Ducks, Geese & Waterfowl Anatidae
Swifts Apodidae
Herons, Egrets & Bitterns Ardeidae
Waxwings Bombycillidae
Nightjars & Nighthawks Caprimulgidae
Cardinals & Grosbeaks Cardinalidae
New World Vultures Cathartidae
Treecreepers Certhiidae
Plovers & Lapwings Charadriidae
Falcons & Caracaras Falconidae
Swallows & Martins Hirundinidae
Blackbirds & Orioles Icteridae
Gulls, Terns & Skimmers Laridae
New World Quail Odontophoridae
Osprey Pandionidae
Wood-Warblers Parulidae
American Redstart +195%Black-and-white Warbler +20%Black-throated Blue Warbler +49%Black-throated Green Warbler +32%Blackburnian Warbler +208%Blue-winged Warbler -10%Canada Warbler -72%Chestnut-sided Warbler +50%Common Yellowthroat -12%Golden-winged Warbler -58%Louisiana Waterthrush +541%Magnolia Warbler -49%Mourning Warbler -18%Nashville Warbler -71%Northern Parula +444%Northern Waterthrush +256%Ovenbird +204%Pine Warbler +499%Prairie Warbler -70%Worm-eating Warbler +93%Yellow Warbler +108%
New World Sparrows Passerellidae
Old World Sparrows Passeridae
Cormorants Phalacrocoracidae
Woodpeckers Picidae
Gnatcatchers Polioptilidae
Kinglets Regulidae
Starlings & Mynas Sturnidae
Hummingbirds Trochilidae
Thrushes Turdidae
Tyrant Flycatchers Tyrannidae
Source: USGS North American Breeding Bird Survey, retrieved 2026-05-22.