Species · BCR 28 · BBS 2025 Release · 1966–2024
Blue-gray Gnatcatcher In Appalachian Mountains
Blue-gray Gnatcatcher in Appalachian Mountains has surged: up 78% on the route-weighted index since 1968.
+78%Since 1968
374Routes In Region
58Years
Notable Signals
long arc increasecomputed index
Blue-gray Gnatcatcher has surged in Appalachian Mountains: up 78% on the route-weighted index since 1968.
Forecast
If the recent trend holds, Blue-gray Gnatcatcher in Appalachian Mountains is projected to rise about 27% by 2029 — from 3.3 in 2024 to a central estimate of 4.2 (95% range 2.7–5.7). A 5-year backtest shows a typical error of ±33.9%, with 80% of held-out values landing inside the 95% band.
+27%Change by 2029
4.2Projected 2029 index
2.7–5.795% range
±33.9%Backtest error
| Year | Projected index | 95% low | 95% high |
|---|---|---|---|
| 2025 | 4.1 | 2.6 | 5.6 |
| 2026 | 4.1 | 2.6 | 5.6 |
| 2027 | 4.2 | 2.7 | 5.7 |
| 2028 | 4.2 | 2.7 | 5.7 |
| 2029 | 4.2 | 2.7 | 5.7 |
Routes In Appalachian Mountains
| Cumberlnd Gp | KENTUCKY | 87 | 2018 |
| Stevenson | ALABAMA | 34 | 2024 |
| Borden Springs 2 | ALABAMA | 30 | 2024 |
| Mt Olive | ALABAMA | 26 | 2024 |
| Staffordsvil | KENTUCKY | 26 | 1997 |
| Amos Mill | GEORGIA | 25 | 2022 |
| Dell | OHIO | 25 | 2019 |
| Corryton Rd | TENNESSEE | 23 | 2019 |
| Riverside | ALABAMA | 22 | 2013 |
| Oldtown | MARYLAND | 21 | 2024 |
| Welch | WEST-VIRGINIA | 21 | 2023 |
| Zaleski S.F. | OHIO | 20 | 2024 |
| Linwood | GEORGIA | 18 | 2023 |
| Bramwell | WEST-VIRGINIA | 18 | 2023 |
| Hubbardstown | WEST-VIRGINIA | 18 | 2023 |
| Beattyville 2 | KENTUCKY | 17 | 2024 |
| Paintsville | KENTUCKY | 17 | 1995 |
| Fontana | NORTH-CAROLINA | 16 | 2024 |
| Smokey Jct | TENNESSEE | 16 | 2022 |
| Lovell | TENNESSEE | 16 | 2019 |
| Walland | TENNESSEE | 16 | 1989 |
| Smyer Lake | ALABAMA | 15 | 2024 |
| Borden Sprng | ALABAMA | 15 | 1998 |
| Williamsport | MARYLAND | 15 | 2024 |
| Covington | VIRGINIA | 15 | 2024 |
Source: USGS North American Breeding Bird Survey, retrieved 2026-05-22.