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

White-eyed Vireo Population Trend in New Jersey

All statesForest birds

White-eyed Vireo in New Jersey has increased: up 42% on the route-weighted index since 1968.

+42%Since 1968TrendPercent 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 →
42Routes In StateSurvey routesHow many standard-protocol BBS routes contributed counts. More routes means a steadier, better-sampled index; very thin coverage is suppressed.Full methodology →
58YearsYears surveyedNumber of years with at least one standard-protocol run in this geography. A longer record makes the trend more reliable.Full methodology →

Notable White-eyed Vireo Trends in New JerseyNotable signalsLong-arc shifts the engine flags automatically — sustained declines or increases large enough to stand out from year-to-year noise.Full methodology →

No notable trend signals for White-eyed Vireo in New Jersey. See the full index history below.

White-eyed Vireo Population Forecast in New Jersey

If the recent trend holds, White-eyed Vireo in New Jersey is projected to fall about 28% by 2029 — from 1.0 in 2024 to a central estimate of 0.76 (95% range 0.00–1.6). A 5-year backtest shows a typical error of ±47.3%, with 100% of held-out values landing inside the 95% band.

-28%Change by 2029TrendPercent 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 →
0.76Projected 2029 indexProjected indexThe central forecast of the abundance index if the recent trend continues. A projection of the current trajectory, not a prediction.Full methodology →
0.00–1.695% range95% rangeThe 95% uncertainty band around the projection at the forecast horizon. The true value should land inside it most of the time.Full methodology →
±47.3%Backtest errorBacktest errorTypical error when we hold out the most recent years, forecast them, and compare to what actually happened. Lower means a more trustworthy projection.Full methodology →
If the recent trend holds, White-eyed Vireo in New Jersey is projected to fall about 28% by 2029 — from 1.0 in 2024 to a central estimate of 0.76 (95% range 0.00–1.6). A 5-year backtest shows a typical error of ±47.3%, with 100% of held-out values landing inside the 95% band.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 indexProjected indexThe central forecast of the abundance index if the recent trend continues. A projection of the current trajectory, not a prediction.Full methodology →95% low95% rangeThe 95% uncertainty band around the projection at the forecast horizon. The true value should land inside it most of the time.Full methodology →95% high95% rangeThe 95% uncertainty band around the projection at the forecast horizon. The true value should land inside it most of the time.Full methodology →
20250.760.001.6
20260.760.001.6
20270.760.001.6
20280.760.001.6
20290.760.001.6

White-eyed Vireo Survey Routes in New Jersey

Routes recording White-eyed Vireo in New Jersey.
Recent countThe raw number of individuals recorded on this route in its most recent survey year. A single-route tally, not a trend.Full methodology →
Winslow720241989
Pomona620241978
Estell Manor620222022
Villas519811979
Bennett Mill 2520242016
Del Haven419911991
Bennett Mill320001968
Sandbrook320221972
Cape May Ch320101992
Woodbury Hgt220241986
Six Points220241978
Albion220071990
Pottersville220051982
Spraguetown 3220232021
Greenwich120211966
Deepwater119701970
Toms River119951966
Ancora119771967
Masonville119661966
Holmansville120091969
Clarksville119741974
New Bedford120171970
Croton119961978
Robbinsville119771968
Hope119931989

White-eyed Vireo Population Trend in Other States

alabamaarkansasconnecticutdelawarefloridageorgiaillinoisindianaiowakansaskentuckylouisianamainemarylandmassachusettsmichiganmississippimissourinebraskanew-yorknorth-carolinaohiooklahomapennsylvaniarhode-islandsouth-carolinatennesseetexasvirginiawest-virginiawisconsin

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