BirdAnalyst
Species · BCR 28 · BBS 2026 Release · 1966–2025

Fish Crow In Appalachian Mountains

All regionsAppalachian MountainsGeneralists

Fish Crow in Appalachian Mountains has surged: up 561% on the route-weighted index since 1968.

+561%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 →
119Routes 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 →
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 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 561% 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 38% by 2030 — from 0.99 in 2025 to a central estimate of 0.61 (95% range 0.35–0.87). A 5-year backtest shows a typical error of ±41.7%, with 20% of held-out values landing inside the 95% band.

-38%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 →
0.61Projected 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 →
0.35–0.8795% 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 →
±41.7%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 38% by 2030 — from 0.99 in 2025 to a central estimate of 0.61 (95% range 0.35–0.87). A 5-year backtest shows a typical error of ±41.7%, with 20% 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 →
20260.580.320.84
20270.590.330.84
20280.590.340.85
20290.600.340.86
20300.610.350.87

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 →
Schaefferstown 2PENNSYLVANIA232025
Drehersville 2PENNSYLVANIA182025
Signal MtnTENNESSEE162025
Peters MtPENNSYLVANIA121993
WilliamsportMARYLAND112025
CartersvilleGEORGIA102025
RamseyPENNSYLVANIA102025
MillvillePENNSYLVANIA92025
DoverNEW-JERSEY82023
EdinburgVIRGINIA82025
Pine GroveALABAMA72025
JeromeVIRGINIA72025
Mt OliveALABAMA62025
RiversideALABAMA62013
CarsonvillePENNSYLVANIA62023
BattlecreekSOUTH-CAROLINA62024
StanleyVIRGINIA62025
MartinsburgWEST-VIRGINIA62025
Smyer LakeALABAMA52024
MaytownALABAMA52025
TalladegaALABAMA52025
DoylesburgPENNSYLVANIA52023
BerwickPENNSYLVANIA52024
Pocono SummitPENNSYLVANIA42025
Hop BottomPENNSYLVANIA42025

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