Species · West Virginia · BBS 2025 Release · 1966–2024
Chestnut-sided Warbler Population Trend in West Virginia
Chestnut-sided Warbler in West Virginia has surged: up 365% on the route-weighted index since 1968.
+365%Since 1968
41Routes In State
58Years
Notable Chestnut-sided Warbler Trends in West Virginia
long arc increasecomputed index
Chestnut-sided Warbler has surged in West Virginia: up 365% on the route-weighted index since 1968.
Chestnut-sided Warbler Population Forecast in West Virginia
If the recent trend holds, Chestnut-sided Warbler in West Virginia is projected to fall about 19% by 2029 — from 3.3 in 2024 to a central estimate of 2.7 (95% range 1.6–3.7). A 5-year backtest shows a typical error of ±34.2%, with 80% of held-out values landing inside the 95% band.
-19%Change by 2029
2.7Projected 2029 index
1.6–3.795% range
±34.2%Backtest error
| Year | Projected index | 95% low | 95% high |
|---|---|---|---|
| 2025 | 2.5 | 1.5 | 3.6 |
| 2026 | 2.6 | 1.5 | 3.6 |
| 2027 | 2.6 | 1.6 | 3.7 |
| 2028 | 2.6 | 1.6 | 3.7 |
| 2029 | 2.7 | 1.6 | 3.7 |
Chestnut-sided Warbler Survey Routes in West Virginia
| Valley Head | 29 | 2024 | 1966 |
| Richwood | 24 | 2024 | 1980 |
| Glady | 22 | 2024 | 2001 |
| Green Bank | 17 | 2024 | 1977 |
| Clear Creek | 7 | 2001 | 1999 |
| Bemis | 7 | 2024 | 2001 |
| Pedro | 6 | 2023 | 1979 |
| Dailey | 5 | 2024 | 1973 |
| Meadowville | 5 | 2024 | 1972 |
| Bowden | 4 | 2024 | 1993 |
| Hanover | 3 | 2001 | 1998 |
| Bismark | 3 | 2023 | 1976 |
| Lost River | 3 | 2023 | 2023 |
| Canaan | 3 | 2024 | 1974 |
| Moundsville | 3 | 1978 | 1975 |
| Mt Storm | 3 | 1973 | 1966 |
| Bramwell | 2 | 2023 | 1980 |
| Glade Run | 2 | 2002 | 1988 |
| Mo Of Seneca | 2 | 2024 | 1980 |
| Albright | 2 | 1974 | 1967 |
| Yellow Spg | 2 | 2023 | 1993 |
| Glade Run 2 | 2 | 2024 | 2003 |
| Hix | 1 | 1994 | 1972 |
| Smoot | 1 | 2023 | 1986 |
| Stollings | 1 | 2006 | 2004 |
Chestnut-sided Warbler Population Trend in Other States
Source: USGS North American Breeding Bird Survey, retrieved 2026-05-22.