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Species · Kansas · BBS 2025 Release · 1966–2024

Swainson's Hawk Population Trend in Kansas

All statesGeneralists

Swainson's Hawk in Kansas has fallen sharply: down 54% on the route-weighted index since 1969.

-54%Since 1969
52Routes In State
57Years

Notable Swainson's Hawk Trends in Kansas

long arc declinecomputed index

Swainson's Hawk has fallen sharply in Kansas: down 54% on the route-weighted index since 1969.

Swainson's Hawk Population Forecast in Kansas

If the recent trend holds, Swainson's Hawk in Kansas is projected to fall about 22% by 2029 — from 0.77 in 2024 to a central estimate of 0.60 (95% range 0.00–1.3). A 5-year backtest shows a typical error of ±36.6%, with 80% of held-out values landing inside the 95% band.

-22%Change by 2029
0.60Projected 2029 index
0.00–1.395% range
±36.6%Backtest error
19672029
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
20250.620.001.3
20260.620.001.3
20270.610.001.3
20280.610.001.3
20290.600.001.3

Swainson's Hawk Survey Routes in Kansas

Routes recording Swainson's Hawk in Kansas.
Leoti920222000
Plymell820242000
Hodges720082000
Lakin620221967
Ruleton620221982
Grigston620242000
Wellington320191968
St John320101967
Wreford319741972
Albert319851967
Wallace320221967
Ulysses320242000
Coats220181975
Hollenberg219761976
Covert220241967
Jewell219791967
Logan220191967
Gove220131972
Missler220191975
Le Loup220072007
Susank220192019
Winona220182000
Galesburg119701970
Humboldt120131968
Dalton120161968

Swainson's Hawk Population Trend in Other States

arizonaarkansascaliforniacoloradoidahoillinoisiowalouisianaminnesotamissourimontananebraskanevadanew-mexiconorth-dakotaoklahomaoregonsouth-dakotatexasutahwashingtonwisconsinwyoming

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