BirdAnalyst
Species · Alaska · BBS 2025 Release · 1966–2024

Western Wood-Pewee Population Trend in Alaska

All statesAerial insectivores

Western Wood-Pewee in Alaska has held roughly steady: down 9% on the route-weighted index since 1982.

-9%Since 1982TrendPercent 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 →
66Routes 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 →
44YearsYears 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 AlaskaNotable 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 Alaska. See the full index history below.

Western Wood-Pewee Population Forecast in Alaska

If the recent trend holds, Western Wood-Pewee in Alaska is projected to fall about 65% by 2029 — from 1.2 in 2024 to a central estimate of 0.43 (95% range 0.00–1.4). A 5-year backtest shows a typical error of ±85%, with 20% of held-out values landing inside the 95% band.

-65%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 →
0.43Projected 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 →
0.00–1.495% 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 →
±85%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 Alaska is projected to fall about 65% by 2029 — from 1.2 in 2024 to a central estimate of 0.43 (95% range 0.00–1.4). A 5-year backtest shows a typical error of ±85%, with 20% of held-out values landing inside the 95% band.19712029
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 →
20250.460.001.4
20260.460.001.4
20270.450.001.4
20280.440.001.4
20290.430.001.4

Western Wood-Pewee Survey Routes in Alaska

Routes recording Western Wood-Pewee in Alaska.
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 →
Mccarthy Rd21420241998
Circle1220241987
Northway1120221989
Kenny Lake1120241983
Kanuti Lake1120242006
Seven Lakes720231987
Chicken720242014
Anchor River720071989
Matanuska619831982
Eagle520242007
Kuskulana520241990
Ft. Richrdsn520231994
Tower Bluffs420222006
Goose Bay419821982
Skilak Lake319821982
Burma Road320241996
Willow320241993
Moose Creek320222015
Mt. Fairplay320241993
Chatanika R220212021
Nabesna Road220151998
Ketchikan219711971
Nicholai Sl220122000
Kanuti Canyn220241998
Manley Ht Sp220221996

Western Wood-Pewee Population Trend in Other States

arizonacaliforniacoloradoidahokansasmontananebraskanevadanew-mexiconorth-dakotaoklahomaoregonsouth-dakotatexasutahwashingtonwyoming

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