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Species · Wyoming · BBS 2026 Release · 1966–2025

Western Kingbird Population Trend in Wyoming

All statesAerial insectivores

Western Kingbird in Wyoming has surged: up 128% on the route-weighted index since 1970.

+128%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 →
83Routes 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 Kingbird 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 Kingbird has surged in Wyoming: up 128% on the route-weighted index since 1970.

Western Kingbird Population Forecast in Wyoming

If the recent trend holds, Western Kingbird in Wyoming is projected to rise about 62% by 2030 — from 2.0 in 2025 to a central estimate of 3.3 (95% range 1.7–4.9). A 5-year backtest shows a typical error of ±75.9%, with 40% of held-out values landing inside the 95% band.

+62%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 →
3.3Projected 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 →
1.7–4.995% 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 →
±75.9%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 Kingbird in Wyoming is projected to rise about 62% by 2030 — from 2.0 in 2025 to a central estimate of 3.3 (95% range 1.7–4.9). A 5-year backtest shows a typical error of ±75.9%, 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 →
20263.21.54.8
20273.21.64.8
20283.21.64.8
20293.31.64.9
20303.31.74.9

Western Kingbird Survey Routes in Wyoming

Routes recording Western Kingbird 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 →
Lingle4420241980
Arvada2120251982
Bill1920181993
Ethete1620251991
Yoder1520251969
Lusk1420251988
Rozet1420251993
Redbird1319891968
Dwyer1320251992
Chugwater1320241979
Meadowdale1220251983
Hampshire1220241995
Wyarno1120251974
Cheyenne1020251986
Midvale920251987
Lysite720241990
Pine Bluff720251979
Basin620251971
Seely620001991
Otto520251970
Cody420251996
Elk Horn420151990
Upton420251988
Mayoworth420241982
Riverview420251984

Western Kingbird Population Trend in Other States

alaskaarizonaarkansascaliforniacoloradoidahoillinoisindianaiowakansaslouisianamichiganminnesotamississippimissourimontananebraskanevadanew-mexiconorth-dakotaoklahomaoregonsouth-dakotatennesseetexasutahwashingtonwisconsin

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