BirdAnalyst
Species · South Dakota · BBS 2025 Release · 1966–2024

Red Crossbill Population Trend in South Dakota

All statesGeneralists

Red Crossbill in South Dakota has held roughly steady: down 5% on the route-weighted index since 1970.

-5%Since 1970
19Routes In State
56Years

Notable Red Crossbill Trends in South Dakota

No notable trend signals for Red Crossbill in South Dakota. See the full index history below.

Red Crossbill Population Forecast in South Dakota

If the recent trend holds, Red Crossbill in South Dakota is projected to rise about 50% by 2029 — from 4.0 in 2024 to a central estimate of 6.0 (95% range 0.00–16). A 5-year backtest shows a typical error of ±66.4%, with 100% of held-out values landing inside the 95% band.

+50%Change by 2029
6.0Projected 2029 index
0.00–1695% range
±66.4%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
20256.10.0016
20266.10.0016
20276.00.0016
20286.00.0016
20296.00.0016

Red Crossbill Survey Routes in South Dakota

Routes recording Red Crossbill in South Dakota.
Roubaix Lk7619911968
Black Fox5020171992
Norbeck4520021992
Lightning Cr3720221992
Rochford3320181992
Elk Mountain3020041992
Silver City2920121992
Pleasant Val2620241992
Hazelrodt2220241992
Wilmot2119701970
Custer2120241968
Englewood1520211992
Rosebud1419691969
Wind Cave Np1220241999
Hill City820131992
Long Draw720241992
Volunteer219681968
Reva120161979
Ardmore119901984

Red Crossbill Population Trend in Other States

alabamaalaskaarizonaarkansascaliforniacoloradogeorgiaidahoillinoismainemarylandmassachusettsmichiganminnesotamontananebraskanevadanew-hampshirenew-mexiconew-yorknorth-carolinanorth-dakotaoregonpennsylvaniasouth-carolinatennesseeutahvermontvirginiawashingtonwest-virginiawisconsinwyoming

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