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Species · Wyoming · BBS 2025 Release · 1966–2024

Western Wood-Pewee Population Trend in Wyoming

All statesAerial insectivores

Western Wood-Pewee in Wyoming has surged: up 409% on the route-weighted index since 1970.

+409%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 →
91Routes 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 →
56YearsYears 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 409% 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 fall about 15% by 2029 — from 3.5 in 2024 to a central estimate of 3.0 (95% range 2.2–3.8). A 5-year backtest shows a typical error of ±18.4%, with 60% of held-out values landing inside the 95% band.

-15%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 →
3.0Projected 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 →
2.2–3.895% 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 →
±18.4%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 fall about 15% by 2029 — from 3.5 in 2024 to a central estimate of 3.0 (95% range 2.2–3.8). A 5-year backtest shows a typical error of ±18.4%, with 60% 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 →
20252.82.13.6
20262.92.13.6
20272.92.23.7
20283.02.23.7
20293.02.23.8

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 →
Midvale3320241987
Dayton2020241980
Moskee 32020242022
Sundance1720241975
Basin1520242017
Savery1519951989
Ethete1520241997
Fletcher Pk1420241981
Dubois1320241969
Wilson1220241979
Cody1120241988
Meeteetse1120241991
Fox Park1120241999
Mayoworth1020241985
Crazy Woman920241979
Otto720241980
Seely720001990
Soda Lake720241980
Ryan Park720232012
Seely 2720242001
Frannie620242013
Sussex620241998
Seedskadee 2620242024
Wyarno520231977
Sybille Cyn520241989

Western Wood-Pewee Population Trend in Other States

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