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

White-throated Swift Population Trend in Utah

All statesAerial insectivores

White-throated Swift in Utah has collapsed: down 75% on the route-weighted index since 1972.

-75%Since 1972
54Routes In State
52Years

Notable White-throated Swift Trends in Utah

long arc declinecomputed index

White-throated Swift has collapsed in Utah: down 75% on the route-weighted index since 1972.

White-throated Swift Population Forecast in Utah

If the recent trend holds, White-throated Swift in Utah is projected to rise about 62% by 2029 — from 0.75 in 2024 to a central estimate of 1.2 (95% range 0.00–4.7). A 5-year backtest shows a typical error of ±158.2%, with 100% of held-out values landing inside the 95% band.

+62%Change by 2029
1.2Projected 2029 index
0.00–4.795% range
±158.2%Backtest error
19682029
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
20251.40.004.9
20261.30.004.8
20271.30.004.8
20281.20.004.7
20291.20.004.7

White-throated Swift Survey Routes in Utah

Routes recording White-throated Swift in Utah.
Arches Np9620111989
La Sal3619991996
Wellington3220021997
Castleton2919851977
Shivwitz1720241992
Gilson Butte1220042000
Canyonlands1120061991
Cleveland1120241994
Boulder1020181974
Canyonlands1020221986
Hite720211986
Hanksville620101996
Kamas620182015
Hardware Ranch620182018
Navajo Lake520021968
Cane Spr Des519971994
Lost Cr. Res320152015
Altonah319781971
Book Ridge320232003
Bryce Canyon320241990
Beaver320241971
Aneth320141986
Hatch320242000
Alton320031998
Glen Canyon320241994

White-throated Swift Population Trend in Other States

arizonacaliforniacoloradoidahomontananebraskanevadanew-mexicooregonsouth-dakotatexaswashingtonwyoming

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