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Species · Pennsylvania · BBS 2026 Release · 1966–2025

American Crow Population Trend in Pennsylvania

All statesGeneralists

American Crow in Pennsylvania has edged down: down 10% on the route-weighted index since 1968.

-10%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 →
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 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 51% by 2030 — from 25 in 2025 to a central estimate of 37 (95% range 25–49). A 5-year backtest shows a typical error of ±49.4%, with 0% 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 →
37Projected 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 →
25–4995% 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 →
±49.4%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 51% by 2030 — from 25 in 2025 to a central estimate of 37 (95% range 25–49). A 5-year backtest shows a typical error of ±49.4%, with 0% 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 →
2026372549
2027372549
2028372549
2029372549
2030372549

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 →
Arnot8720251969
Scheafferstn8120011966
Betula6720221973
Starlight6619991970
Pocono Summit 26620102004
Rasselas6120221969
Ferris Crnrs5720251966
West Grove5719961966
Teepleville5620251966
Ryde5520051968
Akron5419971989
Waterstreet5320241968
Drehersville5319991966
Sugar Grove5220251980
Peters Mt5119941972
Pottstown5019871966
Needmore5019911966
Waller4920251971
Wild Creek4920251988
Munson4720251979
Espyville4620251967
Labott4619831966
Ridgway4520181966
Lovelton4420251999
Akeley4319791966

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 2026-08-14.