BirdAnalyst
Species · BCR 11 · BBS 2026 Release · 1966–2025

Western Wood-Pewee In Prairie Potholes

All regionsPrairie PotholesAerial insectivores

Western Wood-Pewee in Prairie Potholes has surged: up 17× on the route-weighted index since 1984.

17×Since 1984TrendPercent 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 →
17Routes 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 →
36YearsYears 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 Western Wood-Pewee in Prairie Potholes. See the full index history below.

Western Wood-Pewee In Prairie Potholes Population Forecast

If the recent trend holds, Western Wood-Pewee in Prairie Potholes is projected to stay roughly flat through 2030, near 0.23 (95% range 0.10–0.37). A 5-year backtest shows a typical error of ±24.7%, with 80% of held-out values landing inside the 95% band.

-3%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 →
0.23Projected 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 →
0.10–0.3795% 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 →
±24.7%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, Western Wood-Pewee in Prairie Potholes is projected to stay roughly flat through 2030, near 0.23 (95% range 0.10–0.37). A 5-year backtest shows a typical error of ±24.7%, with 80% of held-out values landing inside the 95% band.19782030
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 →
20260.210.080.35
20270.220.080.35
20280.220.090.36
20290.230.090.37
20300.230.100.37

Routes In Prairie Potholes

Routes recording Western Wood-Pewee in Prairie Potholes.
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 →
ChinookMONTANA62025
Sun RiverMONTANA52025
GlasgowMONTANA42025
HarlemMONTANA22021
WhitlashMONTANA22023
Hay LakeMONTANA12017
SunburstMONTANA12007
VirgelleMONTANA12015
ClevelandMONTANA12025
MaltaMONTANA12024
RedstoneMONTANA11978
Great FallsMONTANA12023
ShelbyMONTANA12019
SacoMONTANA12025
Wolf PointMONTANA12016
LambertMONTANA12025
DenbighNORTH-DAKOTA12024

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