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Species · Indiana · BBS 2025 Release · 1966–2024

Black-and-white Warbler Population Trend in Indiana

All statesForest birds

Black-and-white Warbler in Indiana has fallen sharply: down 57% on the route-weighted index since 1981.

-57%Since 1981
13Routes In State
32Years

Notable Black-and-white Warbler Trends in Indiana

long arc declinecomputed index

Black-and-white Warbler has fallen sharply in Indiana: down 57% on the route-weighted index since 1981.

Black-and-white Warbler Population Forecast in Indiana

If the recent trend holds, Black-and-white Warbler in Indiana is projected to fall about 64% by 2029 — from 0.06 in 2024 to a central estimate of 0.02 (95% range 0.00–0.05). A 5-year backtest shows a typical error of ±34.4%, with 100% of held-out values landing inside the 95% band.

-64%Change by 2029
0.02Projected 2029 index
0.00–0.0595% range
±34.4%Backtest error
19682029
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
20250.020.000.06
20260.020.000.06
20270.020.000.06
20280.020.000.06
20290.020.000.05

Black-and-white Warbler Survey Routes in Indiana

Routes recording Black-and-white Warbler in Indiana.
Hoosier220241995
Clear Spring220051981
Cumback119951995
Kewanna119991999
New Phila120091982
Packertown119921992
Corydon119911968
Vevay120011976
Indiana Dune120142014
Thorntown119931993
Belmont120221981
Newberry120002000
Brookville120242024

Black-and-white Warbler Population Trend in Other States

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

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