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Species · Pennsylvania · BBS 2025 Release · 1966–2024

American Crow Population Trend in Pennsylvania

All statesGeneralists

American Crow in Pennsylvania has held roughly steady: down 6% on the route-weighted index since 1968.

-6%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 →
138Routes 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 American Crow Trends in PennsylvaniaNotable 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 Pennsylvania. See the full index history below.

American Crow Population Forecast in Pennsylvania

If the recent trend holds, American Crow in Pennsylvania is projected to rise about 33% by 2029 — from 28 in 2024 to a central estimate of 38 (95% range 26–49). A 5-year backtest shows a typical error of ±56.2%, with 0% of held-out values landing inside the 95% band.

+33%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 →
38Projected 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 →
26–4995% 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 →
±56.2%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 Pennsylvania is projected to rise about 33% by 2029 — from 28 in 2024 to a central estimate of 38 (95% range 26–49). A 5-year backtest shows a typical error of ±56.2%, with 0% 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 →
2025382649
2026382649
2027382649
2028382649
2029382649

American Crow Survey Routes in Pennsylvania

Routes recording American Crow in Pennsylvania.
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 →
Scheafferstn8120011966
Teepleville6820241966
Betula6720221973
Starlight6619991970
Pocono Summit 26620102004
Drehersville 26320242000
Rasselas6120221969
Ferris Crnrs6020241966
N Pine Grove6020241969
West Grove5719961966
Arnot5520241969
Williamsburg5520241988
Ryde5520051968
Akron5419971989
Stoneybreak5420241992
Waterstreet5320241968
Drehersville5319991966
Peters Mt5119941972
Pottstown5019871966
Needmore5019911966
Munson4920241979
Sugar Grove4920241980
Beaver4820241969
Ramsey4720231968
Waller4620241971

American Crow Population Trend in Other States

alabamaalaskaarizonaarkansascaliforniacoloradoconnecticutdelawarefloridageorgiaidahoillinoisindianaiowakansaskentuckylouisianamainemarylandmassachusettsmichiganminnesotamississippimissourimontananebraskanevadanew-hampshirenew-jerseynew-mexiconew-yorknorth-carolinanorth-dakotaohiooklahomaoregonrhode-islandsouth-carolinasouth-dakotatennesseetexasutahvermontvirginiawashingtonwest-virginiawisconsinwyoming

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