Species · West Virginia · BBS 2025 Release · 1966–2024
Blue-gray Gnatcatcher Population Trend in West Virginia
Blue-gray Gnatcatcher in West Virginia has declined: down 47% on the route-weighted index since 1968.
-47%Since 1968
61Routes In State
58Years
Notable Blue-gray Gnatcatcher Trends in West Virginia
No notable trend signals for Blue-gray Gnatcatcher in West Virginia. See the full index history below.
Blue-gray Gnatcatcher Population Forecast in West Virginia
If the recent trend holds, Blue-gray Gnatcatcher in West Virginia is projected to rise about 69% by 2029 — from 1.6 in 2024 to a central estimate of 2.7 (95% range 0.58–4.9). A 5-year backtest shows a typical error of ±36.4%, with 100% of held-out values landing inside the 95% band.
+69%Change by 2029
2.7Projected 2029 index
0.58–4.995% range
±36.4%Backtest error
| Year | Projected index | 95% low | 95% high |
|---|---|---|---|
| 2025 | 2.9 | 0.70 | 5.0 |
| 2026 | 2.8 | 0.67 | 5.0 |
| 2027 | 2.8 | 0.64 | 5.0 |
| 2028 | 2.8 | 0.61 | 4.9 |
| 2029 | 2.7 | 0.58 | 4.9 |
Blue-gray Gnatcatcher Survey Routes in West Virginia
| Welch | 21 | 2023 | 2002 |
| Bramwell | 18 | 2023 | 1978 |
| Hubbardstown | 18 | 2023 | 1966 |
| Yellow Spg | 11 | 2022 | 1975 |
| Shanghai | 11 | 2022 | 1995 |
| Sleepy Creek | 10 | 1990 | 1966 |
| Henderson | 10 | 2023 | 2002 |
| Rockport | 8 | 2024 | 1966 |
| Washburn | 8 | 2022 | 1974 |
| Rio | 8 | 1995 | 1974 |
| Slate | 7 | 2024 | 1980 |
| Bismark | 7 | 2023 | 1976 |
| Spencer | 6 | 2023 | 1986 |
| Stollings | 5 | 2021 | 1986 |
| Cedarville | 5 | 2023 | 1982 |
| Hix | 4 | 2024 | 1970 |
| Arlee | 4 | 1975 | 1966 |
| Fayetteville | 4 | 1996 | 1980 |
| Mo Of Seneca | 4 | 2019 | 1969 |
| Berryburg | 4 | 1996 | 1975 |
| Meadowville | 4 | 2023 | 1972 |
| Martinsburg | 4 | 2024 | 1966 |
| Clinton | 4 | 2023 | 1966 |
| Glade Run | 4 | 2002 | 1996 |
| Smoot | 3 | 2024 | 1980 |
Blue-gray Gnatcatcher Population Trend in Other States
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Source: USGS North American Breeding Bird Survey, retrieved 2026-05-22.