BirdAnalyst
Species · BCR 19 · BBS 2025 Release · 1966–2024

Swainson's Hawk In Central Mixed Grass Prairie

All regionsCentral Mixed Grass PrairieGeneralists

Swainson's Hawk in Central Mixed Grass Prairie has fallen sharply: down 65% on the route-weighted index since 1969.

-65%Since 1969
108Routes In Region
57Years

Notable Signals

long arc declinecomputed index

Swainson's Hawk has fallen sharply in Central Mixed Grass Prairie: down 65% on the route-weighted index since 1969.

Forecast

If the recent trend holds, Swainson's Hawk in Central Mixed Grass Prairie is projected to fall about 38% by 2029 — from 0.58 in 2024 to a central estimate of 0.36 (95% range 0.03–0.69). A 5-year backtest shows a typical error of ±17.8%, with 100% of held-out values landing inside the 95% band.

-38%Change by 2029
0.36Projected 2029 index
0.03–0.6995% range
±17.8%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
20250.420.080.75
20260.400.070.74
20270.390.050.72
20280.370.040.71
20290.360.030.69

Routes In Central Mixed Grass Prairie

Routes recording Swainson's Hawk in Central Mixed Grass Prairie.
SicklesOKLAHOMA122021
HodgesKANSAS72008
MullenNEBRASKA62023
WeinertTEXAS61994
CashionOKLAHOMA52024
RinggoldNEBRASKA42024
Eagle CityOKLAHOMA42001
CoopertonOKLAHOMA42024
WellingtonKANSAS32019
St JohnKANSAS32010
AlbertKANSAS31985
Piester LakeNEBRASKA32023
GordonNEBRASKA32024
ArthurNEBRASKA32024
BrownleeNEBRASKA32024
ChesterOKLAHOMA31988
RosstonOKLAHOMA32018
HunterOKLAHOMA31994
ChildressTEXAS32024
BookerTEXAS32024
RotanTEXAS32011
GirardTEXAS32023
CoatsKANSAS22018
HollenbergKANSAS21976
CovertKANSAS22024

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