BirdAnalyst
Species · BCR 26 · BBS 2025 Release · 1966–2024

Fish Crow In Mississippi Alluvial Valley

All regionsMississippi Alluvial ValleyGeneralists

Fish Crow in Mississippi Alluvial Valley has surged: up 174% on the route-weighted index since 1968.

+174%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 →
50Routes 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 Mississippi Alluvial Valley: up 174% on the route-weighted index since 1968.

Fish Crow In Mississippi Alluvial Valley Population Forecast

If the recent trend holds, Fish Crow in Mississippi Alluvial Valley is projected to rise about 103% by 2029 — from 2.2 in 2024 to a central estimate of 4.4 (95% range 1.3–7.4). A 5-year backtest shows a typical error of ±115.5%, with 80% of held-out values landing inside the 95% band.

+103%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 →
4.4Projected 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 →
1.3–7.495% 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 →
±115.5%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 Mississippi Alluvial Valley is projected to rise about 103% by 2029 — from 2.2 in 2024 to a central estimate of 4.4 (95% range 1.3–7.4). A 5-year backtest shows a typical error of ±115.5%, with 80% 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 →
20254.21.17.3
20264.21.27.3
20274.31.27.4
20284.31.37.4
20294.41.37.4

Routes In Mississippi Alluvial Valley

Routes recording Fish Crow in Mississippi Alluvial Valley.
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 →
KeystoneLOUISIANA202013
RamahLOUISIANA192024
GibsonLOUISIANA172019
GonzalesLOUISIANA172019
Morgan CityLOUISIANA122022
Baton RougeLOUISIANA82024
South BendARKANSAS72023
FreetownLOUISIANA72019
KraemerLOUISIANA72024
BrousvilleLOUISIANA52024
BelairLOUISIANA52024
BerwickLOUISIANA52018
TiptonvilleTENNESSEE52023
MaynardARKANSAS42024
RoselandLOUISIANA42024
EnglandARKANSAS32024
GillettARKANSAS32024
Augusta 2ARKANSAS32016
Crowley'S RidgeARKANSAS32024
MayflowerLOUISIANA32015
AtchafalayaLOUISIANA32024
Cp GirardeauMISSOURI32024
PawpawTENNESSEE32011
HarrisburgARKANSAS22019
AugustaARKANSAS22001

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