BirdAnalyst
Species · New Jersey · BBS 2025 Release · 1966–2024

Black-and-white Warbler Population Trend in New Jersey

All statesForest birds

Black-and-white Warbler in New Jersey has increased: up 46% on the route-weighted index since 1968.

+46%Since 1968
35Routes In State
58Years

Notable Black-and-white Warbler Trends in New Jersey

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

Black-and-white Warbler Population Forecast in New Jersey

If the recent trend holds, Black-and-white Warbler in New Jersey is projected to fall about 69% by 2029 — from 2.6 in 2024 to a central estimate of 0.80 (95% range 0.00–3.0). A 5-year backtest shows a typical error of ±59.2%, with 100% of held-out values landing inside the 95% band.

-69%Change by 2029
0.80Projected 2029 index
0.00–3.095% range
±59.2%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
20250.860.003.1
20260.840.003.1
20270.830.003.1
20280.810.003.0
20290.800.003.0

Black-and-white Warbler Survey Routes in New Jersey

Routes recording Black-and-white Warbler in New Jersey.
Spraguetown 32120242023
Toms River1020241966
Pomona1020241978
Friendship620241977
Villas519811979
Estell Manor420222021
Spraguetown 2320072000
Bennett Mill320001966
Cape May Ch320111992
Winslow320241989
Holmansville220041969
Hope219941975
High Point220241977
Pottersville219971979
Woodbury Hgt120141991
Greenwich120151973
Six Points119861978
Albion120051966
Ancora119721967
Sandbrook120091980
New Bedford120101993
Croton120071978
Midvale120031971
Kemah Lake120241981
Bloomsbury120101969

Black-and-white Warbler Population Trend in Other States

alabamaarkansascaliforniaconnecticutdelawaregeorgiaillinoisindianakansaskentuckylouisianamainemarylandmassachusettsmichiganminnesotamississippimissourinebraskanew-hampshirenew-yorknorth-carolinanorth-dakotaohiooklahomapennsylvaniarhode-islandsouth-carolinatennesseetexasvermontvirginiawest-virginiawisconsinwyoming

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