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

Cliff Swallow Population Trend in Idaho

All statesAerial insectivores

Cliff Swallow in Idaho has increased: up 40% on the route-weighted index since 1970.

+40%Since 1970
59Routes In State
56Years

Notable Cliff Swallow Trends in Idaho

No notable trend signals for Cliff Swallow in Idaho. See the full index history below.

Cliff Swallow Population Forecast in Idaho

If the recent trend holds, Cliff Swallow in Idaho is projected to rise about 106% by 2029 — from 8.5 in 2024 to a central estimate of 18 (95% range 0.00–38). A 5-year backtest shows a typical error of ±43.1%, with 100% of held-out values landing inside the 95% band.

+106%Change by 2029
18Projected 2029 index
0.00–3895% range
±43.1%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
2025180.0038
2026180.0038
2027180.0038
2028180.0038
2029180.0038

Cliff Swallow Survey Routes in Idaho

Routes recording Cliff Swallow in Idaho.
Henry20419831973
Alturas12719871969
Sawtooth Cty9620141988
Cascade6619841970
Sawtooth City 26420242015
Naples5020221972
Crane Creek4820191993
Mora4720242018
Daniels Res4120191988
Cape Horn3620241972
Blacks Creek3120171969
Cabarton3020231985
Preston2820231988
Glenns Ferry2419861968
Gifford2320171972
Sunbeam2020191994
Hot Spring2020141988
Cedar Hill2020241989
Avery1719941989
Bates1720231988
Centerville1620191972
Ririe1520231971
Pocatello1420191981
Dougal Res1420241988
Springfield1320181969

Cliff Swallow Population Trend in Other States

alabamaalaskaarizonaarkansascaliforniacoloradoconnecticutdelawarefloridageorgiaillinoisindianaiowakansaskentuckylouisianamainemarylandmassachusettsmichiganminnesotamississippimissourimontananebraskanevadanew-hampshirenew-jerseynew-mexiconew-yorknorth-carolinanorth-dakotaohiooklahomaoregonpennsylvaniasouth-carolinasouth-dakotatennesseetexasutahvermontvirginiawashingtonwest-virginiawisconsinwyoming

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