BirdAnalyst
Species · BCR 26 · BBS 2026 Release · 1966–2025

Fish Crow In Mississippi Alluvial Valley

All regionsMississippi Alluvial ValleyGeneralists

Fish Crow in Mississippi Alluvial Valley has surged: up 173% on the route-weighted index since 1968.

+173%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 →
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 Mississippi Alluvial Valley: up 173% 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 55% by 2030 — from 2.8 in 2025 to a central estimate of 4.3 (95% range 1.2–7.4). A 5-year backtest shows a typical error of ±110.4%, with 80% of held-out values landing inside the 95% band.

+55%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 →
4.3Projected 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 →
1.2–7.495% 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 →
±110.4%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, Fish Crow in Mississippi Alluvial Valley is projected to rise about 55% by 2030 — from 2.8 in 2025 to a central estimate of 4.3 (95% range 1.2–7.4). A 5-year backtest shows a typical error of ±110.4%, with 80% 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 →
20264.11.17.2
20274.21.17.2
20284.21.27.3
20294.31.27.3
20304.31.27.4

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 →
KraemerLOUISIANA212025
KeystoneLOUISIANA202013
Baton RougeLOUISIANA192025
GibsonLOUISIANA172019
GonzalesLOUISIANA172019
RamahLOUISIANA142025
Morgan CityLOUISIANA122022
MaynardARKANSAS72025
FreetownLOUISIANA72019
DeventerMISSOURI62025
Pawpaw 2TENNESSEE62025
BelairLOUISIANA52024
BerwickLOUISIANA52018
South BendARKANSAS42025
RoselandLOUISIANA42025
Rayville 2LOUISIANA42025
EnglandARKANSAS32025
GillettARKANSAS32024
Augusta 2ARKANSAS32016
MayflowerLOUISIANA32015
PawpawTENNESSEE32011
HarrisburgARKANSAS22019
AugustaARKANSAS22001
Bardwell 2KENTUCKY22025
FloydLOUISIANA22006

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