Species · South Dakota · BBS 2025 Release · 1966–2024
Eastern Bluebird Population Trend in South Dakota
Eastern Bluebird in South Dakota has declined: down 31% on the route-weighted index since 1969.
-31%Since 1969
40Routes In State
51Years
Notable Eastern Bluebird Trends in South Dakota
No notable trend signals for Eastern Bluebird in South Dakota. See the full index history below.
Eastern Bluebird Population Forecast in South Dakota
If the recent trend holds, Eastern Bluebird in South Dakota is projected to rise about 27% by 2029 — from 0.23 in 2024 to a central estimate of 0.29 (95% range 0.05–0.52). A 5-year backtest shows a typical error of ±350.7%, with 60% of held-out values landing inside the 95% band.
+27%Change by 2029
0.29Projected 2029 index
0.05–0.5295% range
±350.7%Backtest error
| Year | Projected index | 95% low | 95% high |
|---|---|---|---|
| 2025 | 0.28 | 0.04 | 0.51 |
| 2026 | 0.28 | 0.04 | 0.52 |
| 2027 | 0.28 | 0.05 | 0.52 |
| 2028 | 0.29 | 0.05 | 0.52 |
| 2029 | 0.29 | 0.05 | 0.52 |
Eastern Bluebird Survey Routes in South Dakota
| Gorman | 4 | 2010 | 2007 |
| Wind Cave Np | 3 | 2024 | 1999 |
| Tripp | 2 | 2015 | 1971 |
| Howard | 2 | 1995 | 1970 |
| Geddes | 2 | 2018 | 1967 |
| Volga | 2 | 1989 | 1969 |
| Wilmot | 2 | 2016 | 1967 |
| Conde | 2 | 1983 | 1983 |
| Custer | 2 | 2024 | 2014 |
| Reva | 2 | 2012 | 1993 |
| White River | 2 | 2013 | 1998 |
| Hazelrodt | 2 | 2023 | 1997 |
| Lennox | 1 | 1992 | 1992 |
| Chamberlain | 1 | 2011 | 1968 |
| Winner | 1 | 2023 | 1988 |
| Rosebud | 1 | 2011 | 2009 |
| Raymond | 1 | 2015 | 1967 |
| Roswell | 1 | 1993 | 1973 |
| Broadland | 1 | 2001 | 1989 |
| Lane | 1 | 1999 | 1968 |
| Crow Creek | 1 | 2018 | 2009 |
| Ft Thompson | 1 | 2004 | 1968 |
| Veblen | 1 | 2018 | 1971 |
| Britton | 1 | 2017 | 1969 |
| Gettysburg | 1 | 2018 | 2018 |
Eastern Bluebird Population Trend in Other States
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Source: USGS North American Breeding Bird Survey, retrieved 2026-05-22.