Species · West Virginia · BBS 2025 Release · 1966–2024
Grasshopper Sparrow Population Trend in West Virginia
Grasshopper Sparrow in West Virginia has collapsed: down 96% on the route-weighted index since 1968.
-96%Since 1968
41Routes In State
58Years
Notable Grasshopper Sparrow Trends in West Virginia
long arc declinecomputed index
Grasshopper Sparrow has collapsed in West Virginia: down 96% on the route-weighted index since 1968.
Grasshopper Sparrow Population Forecast in West Virginia
If the recent trend holds, Grasshopper Sparrow in West Virginia is projected to fall about 100% by 2029 — from 0.24 in 2024 to a central estimate of 0.00 (95% range 0.00–1.7). A 5-year backtest shows a typical error of ±520.9%, with 100% of held-out values landing inside the 95% band.
-100%Change by 2029
0.00Projected 2029 index
0.00–1.795% range
±520.9%Backtest error
| Year | Projected index | 95% low | 95% high |
|---|---|---|---|
| 2025 | 0.00 | 0.00 | 1.7 |
| 2026 | 0.00 | 0.00 | 1.7 |
| 2027 | 0.00 | 0.00 | 1.7 |
| 2028 | 0.00 | 0.00 | 1.7 |
| 2029 | 0.00 | 0.00 | 1.7 |
Grasshopper Sparrow Survey Routes in West Virginia
| Martinsburg | 7 | 2024 | 1966 |
| Sleepy Creek | 6 | 1990 | 1966 |
| Glade Run | 3 | 2002 | 2002 |
| Rockport | 3 | 1979 | 1966 |
| Rio | 3 | 1995 | 1974 |
| Smoot | 2 | 2013 | 1986 |
| Wymer | 2 | 2014 | 2012 |
| Bemis | 2 | 2024 | 2002 |
| Valley Head | 2 | 2007 | 1966 |
| Three Forks | 2 | 1987 | 1987 |
| Ruthbelle | 2 | 2023 | 1975 |
| Hix | 1 | 2012 | 1970 |
| Pedro | 1 | 2011 | 1979 |
| Bowden | 1 | 2012 | 2001 |
| Pt Pleasant | 1 | 2008 | 1974 |
| Arlee | 1 | 1979 | 1966 |
| Meadland | 1 | 2017 | 1998 |
| Nicut | 1 | 2006 | 1990 |
| Paradise | 1 | 2011 | 1966 |
| Bismark | 1 | 2021 | 2003 |
| Lost River | 1 | 2021 | 1996 |
| Canaan | 1 | 1982 | 1974 |
| Sutton | 1 | 1999 | 1977 |
| Shanghai | 1 | 2022 | 1995 |
| Denmar | 1 | 2008 | 1980 |
Grasshopper Sparrow Population Trend in Other States
alabamaarizonaarkansascaliforniacoloradoconnecticutdelawarefloridageorgiaidahoillinoisindianaiowakansaskentuckylouisianamainemarylandmassachusettsmichiganminnesotamississippimissourimontananebraskanevadanew-hampshirenew-jerseynew-mexiconew-yorknorth-carolinanorth-dakotaohiooklahomaoregonpennsylvaniasouth-carolinasouth-dakotatennesseetexasutahvermontvirginiawashingtonwisconsinwyoming
Source: USGS North American Breeding Bird Survey, retrieved 2026-05-22.