Species · West Virginia · BBS 2025 Release · 1966–2024
Canada Warbler Population Trend in West Virginia
Canada Warbler in West Virginia has surged: up 12× on the route-weighted index since 1978.
12×Since 1978
18Routes In State
48Years
Notable Canada Warbler Trends in West Virginia
long arc increasecomputed index
Canada Warbler has surged in West Virginia: up 12× on the route-weighted index since 1978.
Canada Warbler Population Forecast in West Virginia
If the recent trend holds, Canada Warbler in West Virginia is projected to fall about 38% by 2029 — from 0.62 in 2024 to a central estimate of 0.39 (95% range 0.04–0.73). A 5-year backtest shows a typical error of ±54%, with 100% of held-out values landing inside the 95% band.
-38%Change by 2029
0.39Projected 2029 index
0.04–0.7395% range
±54%Backtest error
| Year | Projected index | 95% low | 95% high |
|---|---|---|---|
| 2025 | 0.38 | 0.04 | 0.72 |
| 2026 | 0.38 | 0.04 | 0.72 |
| 2027 | 0.38 | 0.04 | 0.72 |
| 2028 | 0.38 | 0.04 | 0.72 |
| 2029 | 0.39 | 0.04 | 0.73 |
Canada Warbler Survey Routes in West Virginia
| Glade Run 2 | 10 | 2024 | 2003 |
| Richwood | 6 | 2024 | 1980 |
| Glady | 4 | 2024 | 2005 |
| Glade Run | 3 | 2002 | 1988 |
| Bemis | 3 | 2024 | 2004 |
| Dailey | 2 | 2019 | 1975 |
| Bowden | 1 | 2023 | 1993 |
| Wymer | 1 | 2008 | 1996 |
| Clear Creek | 1 | 1992 | 1992 |
| Albright | 1 | 1970 | 1970 |
| Meadowville | 1 | 2012 | 1991 |
| Sleepy Creek | 1 | 1982 | 1982 |
| Bismark | 1 | 2021 | 1990 |
| Canaan | 1 | 1994 | 1980 |
| Valley Head | 1 | 1985 | 1985 |
| Three Forks | 1 | 1987 | 1978 |
| Denmar | 1 | 2016 | 1980 |
| Green Bank | 1 | 1993 | 1979 |
Canada Warbler Population Trend in Other States
Source: USGS North American Breeding Bird Survey, retrieved 2026-05-22.