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

Wood Thrush Population Trend in New Jersey

All statesForest birds

Wood Thrush in New Jersey has held roughly steady: down 5% on the route-weighted index since 1968.

-5%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 Wood Thrush 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 Wood Thrush in New Jersey. See the full index history below.

Wood Thrush Population Forecast in New Jersey

If the recent trend holds, Wood Thrush in New Jersey is projected to stay roughly flat through 2029, near 6.6 (95% range 2.9–10). A 5-year backtest shows a typical error of ±31.1%, with 100% of held-out values landing inside the 95% band.

+7%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 →
6.6Projected 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 →
2.9–1095% 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 →
±31.1%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, Wood Thrush in New Jersey is projected to stay roughly flat through 2029, near 6.6 (95% range 2.9–10). A 5-year backtest shows a typical error of ±31.1%, 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 →
20256.83.110
20266.73.110
20276.73.010
20286.63.010
20296.62.910

Wood Thrush Survey Routes in New Jersey

Routes recording Wood Thrush 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 →
Hope3819941970
Kemah Lake3220241966
Croton1820071970
Winslow1220241989
High Point1120241977
Del Haven1119911991
Pedricktown1120121991
Ramseysburg1120241995
Masonville1019701966
Midvale1020221967
Croton 21020242008
Bennett Mill920001966
Holmansville920091969
Robbinsville919791966
Dover920231977
Clarksville819911969
Bloomsbury820241969
Greenwich720241966
Pottersville720241977
Villas719811979
New Bedford620241969
Pomona620241978
Deepwater519771969
Ancora519771966
Sandbrook520241969

Wood Thrush Population Trend in Other States

alabamaarkansasconnecticutdelawarefloridageorgiaillinoisindianaiowakansaskentuckylouisianamainemarylandmassachusettsmichiganminnesotamississippimissourinebraskanew-hampshirenew-yorknorth-carolinaohiooklahomapennsylvaniarhode-islandsouth-carolinasouth-dakotatennesseetexasvermontvirginiawest-virginiawisconsin

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