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

White-throated Swift Population Trend in Nevada

All statesAerial insectivores

White-throated Swift in Nevada has increased: up 38% on the route-weighted index since 1985.

+38%Since 1985TrendPercent 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 →
20Routes 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 →
35YearsYears 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 NevadaNotable 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 White-throated Swift in Nevada. See the full index history below.

White-throated Swift Population Forecast in Nevada

If the recent trend holds, White-throated Swift in Nevada is projected to rise about 15% by 2029 — from 0.68 in 2024 to a central estimate of 0.78 (95% range 0.00–1.9). A 5-year backtest shows a typical error of ±119.5%, with 100% 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 →
0.78Projected 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 →
0.00–1.995% 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 →
±119.5%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 Nevada is projected to rise about 15% by 2029 — from 0.68 in 2024 to a central estimate of 0.78 (95% range 0.00–1.9). A 5-year backtest shows a typical error of ±119.5%, with 100% of held-out values landing inside the 95% band.19692029
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 →
20250.770.001.9
20260.770.001.9
20270.770.001.9
20280.780.001.9
20290.780.001.9

White-throated Swift Survey Routes in Nevada

Routes recording White-throated Swift in Nevada.
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 →
Meadow Vally1620241996
Comins Lake1120092009
Humboldt Nf620062006
Calico Spr519741974
Ruby Valley420012001
Virgin Creek320181995
Val Of Fire320211985
Bald Mtn.320242024
Austin220102010
Willis220051995
Hiko220091993
Jean Lake220081993
Nelson220161995
Jarbidge220142006
Desert Nwr120182018
Sand Pass119961996
Ash Meadows120231993
Dobbin Creek119951995
Beatty120161994
Alamo119691969

White-throated Swift Population Trend in Other States

arizonacaliforniacoloradoidahomontananebraskanew-mexicooregonsouth-dakotatexasutahwashingtonwyoming

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