Species · West Virginia · BBS 2025 Release · 1966–2024
Vesper Sparrow Population Trend in West Virginia
Vesper Sparrow in West Virginia has collapsed: down 96% on the route-weighted index since 1968.
-96%Since 1968
24Routes In State
46Years
Notable Vesper Sparrow Trends in West Virginia
long arc declinecomputed index
Vesper Sparrow has collapsed in West Virginia: down 96% on the route-weighted index since 1968.
Vesper Sparrow Population Forecast in West Virginia
If the recent trend holds, Vesper Sparrow in West Virginia is projected to stay roughly flat through 2028, near 0.00 (95% range 0.00–0.41). A 5-year backtest shows a typical error of ±539.4%, with 100% of held-out values landing inside the 95% band.
n/aChange by 2028
0.00Projected 2028 index
0.00–0.4195% range
±539.4%Backtest error
| Year | Projected index | 95% low | 95% high |
|---|---|---|---|
| 2024 | 0.00 | 0.00 | 0.41 |
| 2025 | 0.00 | 0.00 | 0.41 |
| 2026 | 0.00 | 0.00 | 0.41 |
| 2027 | 0.00 | 0.00 | 0.41 |
| 2028 | 0.00 | 0.00 | 0.41 |
Vesper Sparrow Survey Routes in West Virginia
| Sleepy Creek | 4 | 1981 | 1968 |
| Smoot | 3 | 1986 | 1986 |
| Pedro | 2 | 2008 | 1994 |
| Canaan | 2 | 2023 | 2015 |
| Green Bank | 2 | 2004 | 1978 |
| Slate | 2 | 1983 | 1983 |
| Albright | 2 | 1974 | 1966 |
| Hix | 1 | 2013 | 1970 |
| Glade Run | 1 | 1990 | 1990 |
| Ghent | 1 | 1981 | 1980 |
| Welch | 1 | 2017 | 2017 |
| Bemis | 1 | 2015 | 2002 |
| Bismark | 1 | 1987 | 1987 |
| Valley Head | 1 | 1985 | 1966 |
| Sugar Grove | 1 | 1978 | 1966 |
| Mo Of Seneca | 1 | 1985 | 1970 |
| Moundsville | 1 | 1980 | 1972 |
| Monongah | 1 | 1995 | 1966 |
| Bebee | 1 | 1994 | 1972 |
| Greer | 1 | 1980 | 1966 |
| Yellow Spg | 1 | 1973 | 1972 |
| Martinsburg | 1 | 2015 | 1966 |
| Clinton | 1 | 1983 | 1966 |
| Ruthbelle | 1 | 2001 | 1976 |
Vesper Sparrow Population Trend in Other States
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Source: USGS North American Breeding Bird Survey, retrieved 2026-05-22.