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

White-throated Swift Population Trend in Idaho

All statesAerial insectivores

White-throated Swift in Idaho has held roughly steady: up 2% on the route-weighted index since 1990.

+2%Since 1990
9Routes In State
30Years

Notable White-throated Swift Trends in Idaho

No notable trend signals for White-throated Swift in Idaho. See the full index history below.

White-throated Swift Population Forecast in Idaho

If the recent trend holds, White-throated Swift in Idaho is projected to stay roughly flat through 2029, near 0.16 (95% range 0.00–0.36). A 5-year backtest shows a typical error of ±22.5%, with 100% of held-out values landing inside the 95% band.

+1%Change by 2029
0.16Projected 2029 index
0.00–0.3695% range
±22.5%Backtest error
19882029
Projection of the recent trend (dashed) with 80/95% bands — a projection, not a prediction. Habitat, climate, and land use are not modeled.
YearProjected index95% low95% high
20250.160.000.36
20260.160.000.36
20270.160.000.36
20280.160.000.36
20290.160.000.36

White-throated Swift Survey Routes in Idaho

Routes recording White-throated Swift in Idaho.
Almo620211988
Mora420222019
Magic Mtn420241988
Leadore320102010
Hot Spring119951995
Salmon River120021988
Sunbeam120072007
Featherville119921992
Dougal Res119921989

White-throated Swift Population Trend in Other States

arizonacaliforniacoloradomontananebraskanevadanew-mexicooregonsouth-dakotatexasutahwashingtonwyoming

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