BirdAnalyst
Species · Wyoming · BBS 2026 Release · 1966–2025

Western Wood-Pewee Population Trend in Wyoming

All statesAerial insectivores

Western Wood-Pewee in Wyoming has surged: up 413% on the route-weighted index since 1970.

+413%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 →
93Routes In StateSurvey 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 Western Wood-Pewee Trends in WyomingNotable signalsLong-arc shifts the engine flags automatically — sustained declines or increases large enough to stand out from year-to-year noise.Full methodology →

long arc increasecomputed indexTrend sourceWhether the figure is our own computed route-weighted index or an official USGS modeled estimate. The current build labels every trend as computed.Full methodology →

Western Wood-Pewee has surged in Wyoming: up 413% on the route-weighted index since 1970.

Western Wood-Pewee Population Forecast in Wyoming

If the recent trend holds, Western Wood-Pewee in Wyoming is projected to stay roughly flat through 2030, near 3.1 (95% range 2.3–3.8). A 5-year backtest shows a typical error of ±19.8%, with 40% of held-out values landing inside the 95% band.

-8%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 →
3.1Projected 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 →
2.3–3.895% 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 →
±19.8%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 Wyoming is projected to stay roughly flat through 2030, near 3.1 (95% range 2.3–3.8). A 5-year backtest shows a typical error of ±19.8%, with 40% of held-out values landing inside the 95% band.19682030
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 →
20262.92.23.7
20273.02.23.7
20283.02.23.7
20293.02.33.8
20303.12.33.8

Western Wood-Pewee Survey Routes in Wyoming

Routes recording Western Wood-Pewee in Wyoming.
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 →
Dayton2220251980
Ryan Park2120252012
Moskee 32120252022
Midvale1920251987
Ethete1920251997
Savery1519951989
Fox Park1520251999
Cody1320251988
Sundance1220251975
Meeteetse1220251991
Boulder1220252005
Seely 21120252001
Dubois1020251969
Mayoworth1020241985
Soda Lake1020251980
Crazy Woman920241979
Wilson920251979
Basin720252017
Seely720001990
Fletcher Pk720251981
Lovell620251996
Seedskadee 2620242024
Fontenelle520251992
Riverside520251970
Shawnee520251990

Western Wood-Pewee Population Trend in Other States

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