Species · West Virginia · BBS 2025 Release · 1966–2024
Summer Tanager Population Trend in West Virginia
Summer Tanager in West Virginia has collapsed: down 91% on the route-weighted index since 1968.
-91%Since 1968
46Routes In State
58Years
Notable Summer Tanager Trends in West Virginia
long arc declinecomputed index
Summer Tanager has collapsed in West Virginia: down 91% on the route-weighted index since 1968.
Summer Tanager Population Forecast in West Virginia
If the recent trend holds, Summer Tanager in West Virginia is projected to fall about 93% by 2029 — from 0.14 in 2024 to a central estimate of 0.01 (95% range 0.00–0.86). A 5-year backtest shows a typical error of ±45.2%, with 100% of held-out values landing inside the 95% band.
-93%Change by 2029
0.01Projected 2029 index
0.00–0.8695% range
±45.2%Backtest error
| Year | Projected index | 95% low | 95% high |
|---|---|---|---|
| 2025 | 0.10 | 0.00 | 0.96 |
| 2026 | 0.08 | 0.00 | 0.93 |
| 2027 | 0.06 | 0.00 | 0.91 |
| 2028 | 0.03 | 0.00 | 0.89 |
| 2029 | 0.01 | 0.00 | 0.86 |
Summer Tanager Survey Routes in West Virginia
| Washburn | 4 | 2022 | 1974 |
| Josephs Mill | 4 | 2023 | 1993 |
| Smithfield | 4 | 2021 | 2021 |
| Breeden | 3 | 2019 | 1986 |
| Clear Creek | 2 | 1988 | 1988 |
| Arlee | 2 | 1979 | 1966 |
| Paradise | 2 | 2021 | 1967 |
| Cedarville | 2 | 2022 | 1983 |
| Strange Crk | 2 | 2017 | 1993 |
| Slate | 2 | 2024 | 1980 |
| Greer | 2 | 2003 | 1970 |
| Sleepy Creek | 2 | 1971 | 1967 |
| Clinton | 2 | 1967 | 1967 |
| Henderson | 2 | 2023 | 2002 |
| Hix | 1 | 1986 | 1970 |
| Pedro | 1 | 2023 | 1994 |
| Stollings | 1 | 2016 | 1986 |
| Bowden | 1 | 2023 | 2023 |
| Hanover | 1 | 2024 | 1980 |
| Welch | 1 | 2022 | 1980 |
| Pt Pleasant | 1 | 2021 | 1973 |
| Hubbardstown | 1 | 2023 | 1966 |
| Spencer | 1 | 2021 | 1986 |
| Clendenin | 1 | 2006 | 1979 |
| Nicut | 1 | 2021 | 1986 |
Summer Tanager Population Trend in Other States
Source: USGS North American Breeding Bird Survey, retrieved 2026-05-22.