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Species · Utah · BBS 2025 Release · 1966–2024

Swainson's Hawk Population Trend in Utah

All statesGeneralists

Swainson's Hawk in Utah has declined: down 41% on the route-weighted index since 1972.

-41%Since 1972
60Routes In State
52Years

Notable Swainson's Hawk Trends in Utah

No notable trend signals for Swainson's Hawk in Utah. See the full index history below.

Swainson's Hawk Population Forecast in Utah

If the recent trend holds, Swainson's Hawk in Utah is projected to fall about 45% by 2029 — from 0.71 in 2024 to a central estimate of 0.39 (95% range 0.00–1.4). A 5-year backtest shows a typical error of ±45.3%, with 100% of held-out values landing inside the 95% band.

-45%Change by 2029
0.39Projected 2029 index
0.00–1.495% range
±45.3%Backtest error
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 index95% low95% high
20250.420.001.5
20260.410.001.5
20270.410.001.4
20280.400.001.4
20290.390.001.4

Swainson's Hawk Survey Routes in Utah

Routes recording Swainson's Hawk in Utah.
Snowville1320242006
Randolph620241993
Promontory420241969
Hyrum419791976
Beck419871972
Timpie Spg320031979
Oak City320241972
Lynn320231983
Goose Creek Mtn.320231998
Johnson Can320221990
Delta320241990
Goshen220241970
E. Bear Lake220211996
Castleton219771977
Grouse Creek220081987
Vernon220241993
Leamington220171994
Fayette220191994
Grantsville220242001
Westwater220172001
Pine Creek220232010
Wah Wah220192019
Wellington 3120242024
Moon Lake 2120172014
Salt Springs120192011

Swainson's Hawk Population Trend in Other States

arizonaarkansascaliforniacoloradoidahoillinoisiowakansaslouisianaminnesotamissourimontananebraskanevadanew-mexiconorth-dakotaoklahomaoregonsouth-dakotatexaswashingtonwisconsinwyoming

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