Species · West Virginia · BBS 2025 Release · 1966–2024
Worm-eating Warbler Population Trend in West Virginia
Worm-eating Warbler in West Virginia has declined: down 38% on the route-weighted index since 1968.
-38%Since 1968
61Routes In State
58Years
Notable Worm-eating Warbler Trends in West Virginia
No notable trend signals for Worm-eating Warbler in West Virginia. See the full index history below.
Worm-eating Warbler Population Forecast in West Virginia
If the recent trend holds, Worm-eating Warbler in West Virginia is projected to rise about 40% by 2029 — from 0.54 in 2024 to a central estimate of 0.76 (95% range 0.18–1.3). A 5-year backtest shows a typical error of ±30.2%, with 100% of held-out values landing inside the 95% band.
+40%Change by 2029
0.76Projected 2029 index
0.18–1.395% range
±30.2%Backtest error
| Year | Projected index | 95% low | 95% high |
|---|---|---|---|
| 2025 | 0.76 | 0.18 | 1.3 |
| 2026 | 0.76 | 0.18 | 1.3 |
| 2027 | 0.76 | 0.18 | 1.3 |
| 2028 | 0.76 | 0.18 | 1.3 |
| 2029 | 0.76 | 0.18 | 1.3 |
Worm-eating Warbler Survey Routes in West Virginia
| Shanghai | 9 | 2022 | 1995 |
| Hix | 6 | 2024 | 1970 |
| Sleepy Creek | 6 | 1990 | 1966 |
| Pedro | 3 | 2023 | 1979 |
| Canaan | 3 | 2019 | 1976 |
| Denmar | 3 | 2024 | 1990 |
| Mo Of Seneca | 3 | 2024 | 1971 |
| Monongah | 3 | 1998 | 1966 |
| Josephs Mill | 3 | 2023 | 1995 |
| Yellow Spg | 3 | 2022 | 1975 |
| Bramwell | 2 | 2019 | 1978 |
| Hanover | 2 | 2022 | 1984 |
| Clear Creek | 2 | 2023 | 1992 |
| Welch | 2 | 2022 | 2002 |
| Arlee | 2 | 1975 | 1967 |
| Nicut | 2 | 2019 | 1986 |
| Fayetteville | 2 | 1996 | 1989 |
| Strange Crk | 2 | 2023 | 1982 |
| Washburn | 2 | 2022 | 1980 |
| Mcdonald | 2 | 2003 | 1989 |
| Albright | 2 | 1974 | 1966 |
| Smoot | 1 | 2024 | 1980 |
| Stollings | 1 | 2002 | 1995 |
| Ghent | 1 | 2024 | 1978 |
| Breeden | 1 | 2024 | 1994 |
Worm-eating Warbler Population Trend in Other States
Source: USGS North American Breeding Bird Survey, retrieved 2026-05-22.