BirdAnalyst
Species · BCR 17 · BBS 2025 Release · 1966–2024

Indigo Bunting In Badlands and Prairies

All regionsBadlands and PrairiesGeneralists

Indigo Bunting in Badlands and Prairies has declined: down 26% on the route-weighted index since 1970.

-26%Since 1970TrendPercent 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 →
28Routes 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 →
34YearsYears 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 Indigo Bunting in Badlands and Prairies. See the full index history below.

Indigo Bunting In Badlands and Prairies Population Forecast

If the recent trend holds, Indigo Bunting in Badlands and Prairies is projected to stay roughly flat through 2029, near 0.03 (95% range 0.00–0.12). A 5-year backtest shows a typical error of ±18.7%, with 100% of held-out values landing inside the 95% band.

n/aChange 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 →
0.03Projected 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 →
0.00–0.1295% 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 →
±18.7%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, Indigo Bunting in Badlands and Prairies is projected to stay roughly flat through 2029, near 0.03 (95% range 0.00–0.12). A 5-year backtest shows a typical error of ±18.7%, with 100% of held-out values landing inside the 95% band.19682029
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 →
20250.030.000.12
20260.030.000.12
20270.030.000.12
20280.030.000.12
20290.030.000.12

Routes In Badlands and Prairies

Routes recording Indigo Bunting in Badlands and Prairies.
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 →
BrandenbergMONTANA21996
SolenNORTH-DAKOTA22012
ChamberlainSOUTH-DAKOTA22011
RosebudSOUTH-DAKOTA22010
Eagle ButteSOUTH-DAKOTA22012
MarcusSOUTH-DAKOTA22014
LindsayMONTANA12021
CrookstonNEBRASKA12024
Dunn CenterNORTH-DAKOTA12016
ZapNORTH-DAKOTA11990
Roosevelt PkNORTH-DAKOTA11984
WinnerSOUTH-DAKOTA12021
RockyfordSOUTH-DAKOTA11976
Ft ThompsonSOUTH-DAKOTA12011
PromiseSOUTH-DAKOTA12012
Roubaix LkSOUTH-DAKOTA11982
VolunteerSOUTH-DAKOTA11968
CusterSOUTH-DAKOTA11975
Fort PierreSOUTH-DAKOTA11979
RevaSOUTH-DAKOTA11994
HayesSOUTH-DAKOTA12017
LacreekSOUTH-DAKOTA11997
White RiverSOUTH-DAKOTA11998
WyarnoWYOMING11975
SundanceWYOMING12024

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