BirdAnalyst
Species · New Jersey · BBS 2026 Release · 1966–2025

White-eyed Vireo Population Trend in New Jersey

All statesForest birds

White-eyed Vireo in New Jersey has surged: up 91% on the route-weighted index since 1968.

+91%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 →
59YearsYears 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 →

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 →

White-eyed Vireo has surged in New Jersey: up 91% on the route-weighted index since 1968.

White-eyed Vireo Population Forecast in New Jersey

If the recent trend holds, White-eyed Vireo in New Jersey is projected to fall about 51% by 2030 — from 1.7 in 2025 to a central estimate of 0.82 (95% range 0.00–1.7). A 5-year backtest shows a typical error of ±29.7%, with 80% of held-out values landing inside the 95% band.

-51%Change by 2030TrendPercent 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 →
0.82Projected 2030 indexProjected indexThe central forecast of the abundance index if the recent trend continues. A projection of the current trajectory, not a prediction.Full methodology →
0.00–1.795% 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 →
±29.7%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 51% by 2030 — from 1.7 in 2025 to a central estimate of 0.82 (95% range 0.00–1.7). A 5-year backtest shows a typical error of ±29.7%, with 80% of held-out values landing inside the 95% band.19662030
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 →
20260.820.001.7
20270.820.001.7
20280.820.001.7
20290.820.001.7
20300.820.001.7

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 →
Winslow820251989
Estell Manor720252022
Pomona620251978
Villas519811979
Del Haven419911991
Woodbury Hgt320251986
Bennett Mill320001968
Sandbrook320221972
Cape May Ch320101992
Six Points220251978
Albion220071990
Pottersville220051982
Greenwich120251966
Deepwater119701970
Toms River119951966
Ancora119771967
Masonville119661966
Holmansville120091969
Clarksville119741974
New Bedford120171970
Croton119961978
Robbinsville119771968
Hope119931989
Kemah Lake120092009
Bloomsbury119901990

White-eyed Vireo Population Trend in Other States

alabamaarkansasconnecticutdelawarefloridageorgiaillinoisindianaiowakansaskentuckylouisianamainemarylandmassachusettsmichiganmississippimissourinebraskanew-yorknorth-carolinaohiooklahomapennsylvaniarhode-islandsouth-carolinatennesseetexasvirginiawest-virginiawisconsin

Source: USGS North American Breeding Bird Survey, retrieved 2026-08-14.