Species · BCR 28 · BBS 2025 Release · 1966–2024
Ruby-throated Hummingbird In Appalachian Mountains
Ruby-throated Hummingbird in Appalachian Mountains has surged: up 141% on the route-weighted index since 1968.
+141%Since 1968
392Routes In Region
58Years
Notable Signals
long arc increasecomputed index
Ruby-throated Hummingbird has surged in Appalachian Mountains: up 141% on the route-weighted index since 1968.
Forecast
If the recent trend holds, Ruby-throated Hummingbird in Appalachian Mountains is projected to rise about 73% by 2029 — from 0.58 in 2024 to a central estimate of 1.00 (95% range 0.65–1.3). A 5-year backtest shows a typical error of ±60.2%, with 0% of held-out values landing inside the 95% band.
+73%Change by 2029
1.00Projected 2029 index
0.65–1.395% range
±60.2%Backtest error
| Year | Projected index | 95% low | 95% high |
|---|---|---|---|
| 2025 | 0.95 | 0.61 | 1.3 |
| 2026 | 0.96 | 0.62 | 1.3 |
| 2027 | 0.97 | 0.63 | 1.3 |
| 2028 | 0.99 | 0.64 | 1.3 |
| 2029 | 1.00 | 0.65 | 1.3 |
Routes In Appalachian Mountains
| Lost River | WEST-VIRGINIA | 7 | 2019 |
| Cumberlnd Gp | KENTUCKY | 6 | 2018 |
| Finzel | MARYLAND | 6 | 2024 |
| Brevard | NORTH-CAROLINA | 6 | 2024 |
| Staffordsvil | KENTUCKY | 5 | 1997 |
| S Berne 2 | NEW-YORK | 5 | 2024 |
| Rural Retrt | VIRGINIA | 5 | 2023 |
| New Market | VIRGINIA | 5 | 2022 |
| Washburn | WEST-VIRGINIA | 5 | 2022 |
| Drummond | ALABAMA | 4 | 2021 |
| Murphy | NORTH-CAROLINA | 4 | 2018 |
| Kaylor | PENNSYLVANIA | 4 | 2021 |
| W Augusta | VIRGINIA | 4 | 2024 |
| Martinsburg | WEST-VIRGINIA | 4 | 2007 |
| Trade | ALABAMA | 3 | 2011 |
| Maytown | ALABAMA | 3 | 2023 |
| Woodville | ALABAMA | 3 | 2024 |
| Pippa Passes | KENTUCKY | 3 | 1997 |
| Williamsport | MARYLAND | 3 | 2023 |
| Smithsburg | MARYLAND | 3 | 2011 |
| Milford | NEW-YORK | 3 | 2019 |
| Cullowhee | NORTH-CAROLINA | 3 | 2024 |
| Busick | NORTH-CAROLINA | 3 | 1999 |
| New Marshfld | OHIO | 3 | 2018 |
| Coal Run | OHIO | 3 | 1991 |
Source: USGS North American Breeding Bird Survey, retrieved 2026-05-22.