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

White-throated Swift Population Trend in Wyoming

All statesAerial insectivores

White-throated Swift in Wyoming has surged: up 621% on the route-weighted index since 1980.

+621%Since 1980TrendPercent 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 →
32Routes 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 White-throated Swift 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 →

White-throated Swift has surged in Wyoming: up 621% on the route-weighted index since 1980.

White-throated Swift Population Forecast in Wyoming

If the recent trend holds, White-throated Swift in Wyoming is projected to rise about 22% by 2029 — from 0.58 in 2024 to a central estimate of 0.71 (95% range 0.00–1.5). A 5-year backtest shows a typical error of ±105.2%, with 100% of held-out values landing inside the 95% band.

+22%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 →
0.71Projected 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 →
0.00–1.595% 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 →
±105.2%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, White-throated Swift in Wyoming is projected to rise about 22% by 2029 — from 0.58 in 2024 to a central estimate of 0.71 (95% range 0.00–1.5). A 5-year backtest shows a typical error of ±105.2%, with 100% of held-out values landing inside the 95% band.19772029
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 →
20250.710.001.5
20260.710.001.5
20270.710.001.5
20280.710.001.5
20290.710.001.5

White-throated Swift Survey Routes in Wyoming

Routes recording White-throated Swift 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 →
Moskee4420011980
Moskee 33220242022
Lovell1219971995
Meeteetse920242014
Teapot Dome919891987
Moskee 2920212002
Bucknum819951995
Hunter Peak620241983
Gebo520232011
Chugwater520241981
Tensleep320152009
Gvnt Valley220152000
Mammoth219861986
Clark219901990
Cody119951995
Basin119801980
Dubois120221985
Nowood120041993
Brookhurst119941991
Riverside120172017
Buford120182018
Crazy Woman119981982
Wilson119931993
Crowheart120212003
Anchor120081993

White-throated Swift Population Trend in Other States

arizonacaliforniacoloradoidahomontananebraskanevadanew-mexicooregonsouth-dakotatexasutahwashington

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