Species · South Dakota · BBS 2026 Release · 1966–2025
Virginia Rail Population Trend in South Dakota
Virginia Rail in South Dakota has fallen sharply: down 60% on the route-weighted index since 1973.
Notable Virginia Rail Trends in South DakotaNotable signalsLong-arc shifts the engine flags automatically — sustained declines or increases large enough to stand out from year-to-year noise.Full methodology →
long arc declinecomputed indexTrend sourceWhether the figure is our own computed route-weighted index or an official USGS modeled estimate. The current build labels every trend as computed.Full methodology →
Virginia Rail has fallen sharply in South Dakota: down 60% on the route-weighted index since 1973.
Virginia Rail Survey Routes in South Dakota
| Recent countThe raw number of individuals recorded on this route in its most recent survey year. A single-route tally, not a trend.Full methodology → | |||
|---|---|---|---|
| Lacreek | 14 | 1997 | 1996 |
| Ardmore | 2 | 2014 | 2014 |
| Tripp | 1 | 2019 | 2014 |
| Howard | 1 | 2019 | 1996 |
| White Lake | 1 | 2011 | 2008 |
| Reva | 1 | 2018 | 2018 |
| Chamberlain | 1 | 2010 | 2010 |
| Volga | 1 | 2025 | 1969 |
| Roswell | 1 | 1986 | 1972 |
| Badlands | 1 | 2001 | 2001 |
| Crow Creek | 1 | 2011 | 2011 |
| White River | 1 | 1997 | 1997 |
| Wilmot | 1 | 2008 | 2008 |
| Veblen | 1 | 2011 | 2010 |
| Britton | 1 | 2022 | 2021 |
| Forbes | 1 | 2022 | 2019 |
| Long Lake | 1 | 2001 | 1997 |
| Ottumwa | 1 | 1972 | 1972 |
Virginia Rail Population Trend in Other States
Source: USGS North American Breeding Bird Survey, retrieved 2026-08-14.