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

White-throated Swift Population Trend in Arizona

All statesAerial insectivores

White-throated Swift in Arizona has declined: down 39% on the route-weighted index since 1970.

-39%Since 1970
57Routes In State
56Years

Notable White-throated Swift Trends in Arizona

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

White-throated Swift Population Forecast in Arizona

If the recent trend holds, White-throated Swift in Arizona is projected to stay roughly flat through 2029, near 1.1 (95% range 0.00–2.9). A 5-year backtest shows a typical error of ±58.7%, with 100% of held-out values landing inside the 95% band.

+9%Change by 2029
1.1Projected 2029 index
0.00–2.995% range
±58.7%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
20251.20.003.0
20261.20.003.0
20271.10.003.0
20281.10.003.0
20291.10.002.9

White-throated Swift Survey Routes in Arizona

Routes recording White-throated Swift in Arizona.
Dateland8220161996
Squaw Peak3519701970
Mormon Lake1919741968
Portal1420241975
Pomerene1420241969
Cutter 21320182015
Many Farms1020052005
Round Rock919761968
Greasewood819931993
Cutter820142014
Florence719711971
Yampai619711969
San Simon620171970
Antares620022002
Ajo 2620222012
Bartlett Res520152002
Blue419901975
Forest Lakes420242023
Sahuarita420231993
Carr Mtn420231985
Hunt319761976
Vicksburg319881988
Ajo320011976
Sunizona319971973
Gila Bend320222000

White-throated Swift Population Trend in Other States

californiacoloradoidahomontananebraskanevadanew-mexicooregonsouth-dakotatexasutahwashingtonwyoming

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