BirdAnalyst
Species · BCR 28 · BBS 2025 Release · 1966–2024

Fish Crow In Appalachian Mountains

All regionsAppalachian MountainsGeneralists

Fish Crow in Appalachian Mountains has surged: up 461% on the route-weighted index since 1968.

+461%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 →
116Routes In RegionSurvey 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 SignalsNotable 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 →

Fish Crow has surged in Appalachian Mountains: up 461% on the route-weighted index since 1968.

Fish Crow In Appalachian Mountains Population Forecast

If the recent trend holds, Fish Crow in Appalachian Mountains is projected to fall about 39% by 2029 — from 0.94 in 2024 to a central estimate of 0.57 (95% range 0.34–0.80). A 5-year backtest shows a typical error of ±38.1%, with 40% of held-out values landing inside the 95% band.

-39%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 →
0.57Projected 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 →
0.34–0.8095% 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 →
±38.1%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, Fish Crow in Appalachian Mountains is projected to fall about 39% by 2029 — from 0.94 in 2024 to a central estimate of 0.57 (95% range 0.34–0.80). A 5-year backtest shows a typical error of ±38.1%, with 40% 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 →
20250.540.300.77
20260.550.310.78
20270.550.320.79
20280.560.330.79
20290.570.340.80

Routes In Appalachian Mountains

Routes recording Fish Crow in Appalachian Mountains.
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 →
WilliamsportMARYLAND262024
StanleyVIRGINIA202024
GreensportALABAMA182024
Drehersville 2PENNSYLVANIA182024
Peters MtPENNSYLVANIA121993
EdinburgVIRGINIA102024
TalladegaALABAMA82024
DoverNEW-JERSEY82023
Signal MtnTENNESSEE82024
RiversideALABAMA62013
Clear SpringPENNSYLVANIA62024
CarsonvillePENNSYLVANIA62023
BattlecreekSOUTH-CAROLINA62024
Smyer LakeALABAMA52024
Mt OliveALABAMA52024
KymulgaALABAMA52021
WolfsvilleMARYLAND52024
LandisburgPENNSYLVANIA52023
DoylesburgPENNSYLVANIA52023
ElizabethvilPENNSYLVANIA52024
BerwickPENNSYLVANIA52024
CartersvilleGEORGIA42023
CullowheeNORTH-CAROLINA42024
MillvillePENNSYLVANIA42024
Pocono SummitPENNSYLVANIA42024

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