BirdAnalyst
Species · BCR 22 · BBS 2025 Release · 1966–2024

Dickcissel In Eastern Tallgrass Prairie

All regionsEastern Tallgrass PrairieGrassland birds

Dickcissel in Eastern Tallgrass Prairie has edged down: down 12% on the route-weighted index since 1968.

-12%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 →
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 →

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 2029, near 32 (95% range 16–49). A 5-year backtest shows a typical error of ±23.2%, with 100% of held-out values landing inside the 95% band.

-7%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 →
32Projected 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 →
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 →
±23.2%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 2029, near 32 (95% range 16–49). A 5-year backtest shows a typical error of ±23.2%, with 100% 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 →
2025331650
2026331649
2027331649
2028331649
2029321649

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
ForakerOKLAHOMA1972024
McfallMISSOURI1852024
BedfordIOWA1462018
BarclayKANSAS1452024
BrooklynIOWA1332022
NorborneMISSOURI1312023
WelchOKLAHOMA1292024
College Spgs 2IOWA1272023
BeaucoupILLINOIS1192024
College SpgsIOWA1182004
WilliamsburgIOWA1172023
WalesIOWA1162018
Trading PostKANSAS1152024
WrefordKANSAS1122024
WainwrightOKLAHOMA1122013
MurdockNEBRASKA1102024
MoreheadKANSAS1042024
HumboldtNEBRASKA962024
MadisonMISSOURI952024
ThrallKANSAS931970
WashtaIOWA912014
LucerneMISSOURI892021
BryantIOWA882024
DoverKANSAS882022

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