BirdAnalyst
Species · BCR 22 · BBS 2026 Release · 1966–2025

Dickcissel In Eastern Tallgrass Prairie

All regionsEastern Tallgrass PrairieGrassland birds

Dickcissel in Eastern Tallgrass Prairie has edged down: down 18% on the route-weighted index since 1968.

-18%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 →
277Routes 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 Eastern Tallgrass Prairie. See the full index history below.

Dickcissel In Eastern Tallgrass Prairie Population Forecast

If the recent trend holds, Dickcissel in Eastern Tallgrass Prairie is projected to stay roughly flat through 2030, near 33 (95% range 16–49). A 5-year backtest shows a typical error of ±17.7%, with 100% of held-out values landing inside the 95% band.

-10%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 →
33Projected 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 →
16–4995% 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 →
±17.7%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, Dickcissel in Eastern Tallgrass Prairie is projected to stay roughly flat through 2030, near 33 (95% range 16–49). A 5-year backtest shows a typical error of ±17.7%, 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 →
2026331749
2027331649
2028331649
2029331649
2030331649

Routes In Eastern Tallgrass Prairie

Routes recording Dickcissel in Eastern Tallgrass Prairie.
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 →
LincolnvilleKANSAS2352024
ForakerOKLAHOMA2042025
LucerneMISSOURI1882025
NorborneMISSOURI1312023
WelchOKLAHOMA1252025
Trading PostKANSAS1192025
College SpgsIOWA1182004
BarclayKANSAS1182025
WilliamsburgIOWA1172023
McfallMISSOURI1132025
WrefordKANSAS1122024
WainwrightOKLAHOMA1122013
GalesburgKANSAS1112025
MurdockNEBRASKA1092025
WalesIOWA1062025
MoreheadKANSAS1052025
HarristownILLINOIS1032025
ReeceKANSAS1002025
BeaucoupILLINOIS962025
MadisonMISSOURI952024
ThrallKANSAS931970
HumboldtILLINOIS902025
DoverKANSAS882022
BrooklynIOWA852025
HumboldtKANSAS852022

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