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

Brewer's Blackbird In Badlands and Prairies

All regionsBadlands and PrairiesGeneralists

Brewer's Blackbird in Badlands and Prairies has edged up: up 24% on the route-weighted index since 1969.

+24%Since 1969TrendPercent 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 →
131Routes 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 →
57YearsYears 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 Brewer's Blackbird in Badlands and Prairies. See the full index history below.

Brewer's Blackbird In Badlands and Prairies Population Forecast

If the recent trend holds, Brewer's Blackbird in Badlands and Prairies is projected to stay roughly flat through 2029, near 12 (95% range 5.4–18). A 5-year backtest shows a typical error of ±9.1%, with 100% of held-out values landing inside the 95% band.

-10%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 →
12Projected 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 →
5.4–1895% 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 →
±9.1%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, Brewer's Blackbird in Badlands and Prairies is projected to stay roughly flat through 2029, near 12 (95% range 5.4–18). A 5-year backtest shows a typical error of ±9.1%, with 100% of held-out values landing inside the 95% band.19672029
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 →
2025125.418
2026125.418
2027125.418
2028125.418
2029125.418

Routes In Badlands and Prairies

Routes recording Brewer's Blackbird 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 →
DwyerWYOMING2262019
SavageMONTANA702021
BillWYOMING672018
LuskWYOMING552024
Reed PointMONTANA522024
Cabin CreekMONTANA522024
AlbionMONTANA512024
UptonWYOMING492024
MeadowdaleWYOMING482019
LindsayMONTANA372024
Glen UllinNORTH-DAKOTA322022
SolenNORTH-DAKOTA322024
BucknumWYOMING322024
Wind Cave NpSOUTH-DAKOTA292024
ShawneeWYOMING282024
Miles CityMONTANA272024
ShawmutMONTANA252024
RevaSOUTH-DAKOTA242024
SeelyWYOMING232000
GolvaNORTH-DAKOTA222023
NatronaWYOMING221992
Gvnt ValleyWYOMING222024
RozetWYOMING212023
Bull Mtn.MONTANA202021
Ft YatesNORTH-DAKOTA202004

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