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

American Crow Population Trend in New Jersey

All statesGeneralists

American Crow in New Jersey has held roughly steady: up 1% on the route-weighted index since 1968.

+1%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 →
44Routes 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 American Crow 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 American Crow in New Jersey. See the full index history below.

American Crow Population Forecast in New Jersey

If the recent trend holds, American Crow in New Jersey is projected to rise about 79% by 2030 — from 14 in 2025 to a central estimate of 25 (95% range 8.4–42). A 5-year backtest shows a typical error of ±103.2%, with 60% of held-out values landing inside the 95% band.

+79%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 →
25Projected 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 →
8.4–4295% 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 →
±103.2%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, American Crow in New Jersey is projected to rise about 79% by 2030 — from 14 in 2025 to a central estimate of 25 (95% range 8.4–42). A 5-year backtest shows a typical error of ±103.2%, with 60% 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 →
2026268.843
2027268.743
2028268.642
2029258.542
2030258.442

American Crow Survey Routes in New Jersey

Routes recording American Crow 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 →
Clarksville5519911969
Bennett Mill5420001966
Kemah Lake4820241966
Holmansville4520091969
Pedricktown4120121991
Hope4019941970
Dover3420231977
Del Haven3419911991
Croton3220071970
Bennett Mill 22920252016
Villas2819811979
Pedricktown 22720252013
Croton 22720252008
Cape May Ch2620131992
Keyport2320221986
Masonville2219701966
Robbinsville2219791966
Pottersville2220241977
Mt Misery2219891976
Ramseysburg2220251995
Woodbury Hgt2020251967
Roosevelt2020221986
Sandbrook1920251969
Greenwich1820251966
Pomona1620251978

American Crow Population Trend in Other States

alabamaalaskaarizonaarkansascaliforniacoloradoconnecticutdelawarefloridageorgiaidahoillinoisindianaiowakansaskentuckylouisianamainemarylandmassachusettsmichiganminnesotamississippimissourimontananebraskanevadanew-hampshirenew-mexiconew-yorknorth-carolinanorth-dakotaohiooklahomaoregonpennsylvaniarhode-islandsouth-carolinasouth-dakotatennesseetexasutahvermontvirginiawashingtonwest-virginiawisconsinwyoming

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