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Species · Massachusetts · BBS 2025 Release · 1966–2024

Black-and-white Warbler Population Trend in Massachusetts

All statesForest birds

Black-and-white Warbler in Massachusetts has edged up: up 20% on the route-weighted index since 1968.

+20%Since 1968
32Routes In State
58Years

Notable Black-and-white Warbler Trends in Massachusetts

No notable trend signals for Black-and-white Warbler in Massachusetts. See the full index history below.

Black-and-white Warbler Population Forecast in Massachusetts

If the recent trend holds, Black-and-white Warbler in Massachusetts is projected to fall about 21% by 2029 — from 4.1 in 2024 to a central estimate of 3.3 (95% range 2.0–4.6). A 5-year backtest shows a typical error of ±11.1%, with 100% of held-out values landing inside the 95% band.

-21%Change by 2029
3.3Projected 2029 index
2.0–4.695% range
±11.1%Backtest error
19662029
Projection of the recent trend (dashed) with 80/95% bands — a projection, not a prediction. Habitat, climate, and land use are not modeled.
YearProjected index95% low95% high
20253.32.04.6
20263.32.04.6
20273.32.04.6
20283.32.04.6
20293.32.04.6

Black-and-white Warbler Survey Routes in Massachusetts

Routes recording Black-and-white Warbler in Massachusetts.
Chesterfield2820241967
N Orange1320241968
Pittsfield920161967
Cheshire819941969
Cummington720141968
Monterey720242019
Ware River620221993
Hancock620151997
Belchertown520241967
S Barre520241968
Prattville320191966
Princeton319761969
Cape Cod Ns319961989
Chilmark219831969
Marion220231969
Wellfleet220071966
Warren220081968
Sheffield220221971
Holden220221977
N. Andover220051995
Warren 2220242010
Cummington 2220242015
E Dennis120161967
Brockton120071967
Newburyport120151967

Black-and-white Warbler Population Trend in Other States

alabamaarkansascaliforniaconnecticutdelawaregeorgiaillinoisindianakansaskentuckylouisianamainemarylandmichiganminnesotamississippimissourinebraskanew-hampshirenew-jerseynew-yorknorth-carolinanorth-dakotaohiooklahomapennsylvaniarhode-islandsouth-carolinatennesseetexasvermontvirginiawest-virginiawisconsinwyoming

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