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

Dickcissel In Mississippi Alluvial Valley

All regionsMississippi Alluvial ValleyGrassland birds

Dickcissel in Mississippi Alluvial Valley has edged down: down 21% on the route-weighted index since 1968.

-21%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 →
61Routes 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 →

No notable trend signals for Dickcissel in Mississippi Alluvial Valley. See the full index history below.

Dickcissel In Mississippi Alluvial Valley Population Forecast

If the recent trend holds, Dickcissel in Mississippi Alluvial Valley is projected to stay roughly flat through 2030, near 26 (95% range 12–40). A 5-year backtest shows a typical error of ±15.8%, with 100% of held-out values landing inside the 95% band.

-0%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 →
26Projected 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 →
12–4095% 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 →
±15.8%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, Dickcissel in Mississippi Alluvial Valley is projected to stay roughly flat through 2030, near 26 (95% range 12–40). A 5-year backtest shows a typical error of ±15.8%, with 100% 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 →
2026261240
2027261240
2028261240
2029261240
2030261240

Routes In Mississippi Alluvial Valley

Routes recording Dickcissel 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 →
AugustaARKANSAS1242001
HaytiMISSOURI1222021
WilsonARKANSAS1102025
Augusta 2ARKANSAS1052016
DeventerMISSOURI982025
DellARKANSAS802025
LafeARKANSAS782022
Pawpaw 2TENNESSEE762025
DundeeMISSISSIPPI742022
MaynardARKANSAS722025
HarrisburgARKANSAS632019
Dahomey NwrMISSISSIPPI612025
KelsoARKANSAS602016
EnglandARKANSAS592025
TippoMISSISSIPPI592025
IsolaMISSISSIPPI582022
PawpawTENNESSEE582012
West TylerARKANSAS571984
UlmARKANSAS482025
RayvilleLOUISIANA452008
WhittonARKANSAS431991
HughesARKANSAS402025
GillettARKANSAS362025
TransylvaniaLOUISIANA342025
EudoraARKANSAS312025

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