Species · BCR 29 · BBS 2025 Release · 1966–2024
Ruby-throated Hummingbird In Piedmont
Ruby-throated Hummingbird in Piedmont has risen sharply: up 58% on the route-weighted index since 1968.
+58%Since 1968
154Routes In Region
58Years
Notable Signals
long arc increasecomputed index
Ruby-throated Hummingbird has risen sharply in Piedmont: up 58% on the route-weighted index since 1968.
Forecast
If the recent trend holds, Ruby-throated Hummingbird in Piedmont is projected to rise about 137% by 2029 — from 0.37 in 2024 to a central estimate of 0.87 (95% range 0.54–1.2). A 5-year backtest shows a typical error of ±46%, with 80% of held-out values landing inside the 95% band.
+137%Change by 2029
0.87Projected 2029 index
0.54–1.295% range
±46%Backtest error
| Year | Projected index | 95% low | 95% high |
|---|---|---|---|
| 2025 | 0.83 | 0.51 | 1.2 |
| 2026 | 0.84 | 0.52 | 1.2 |
| 2027 | 0.85 | 0.52 | 1.2 |
| 2028 | 0.86 | 0.53 | 1.2 |
| 2029 | 0.87 | 0.54 | 1.2 |
Routes In Piedmont
| Finchley | VIRGINIA | 8 | 2021 |
| Little Mtn | SOUTH-CAROLINA | 5 | 1988 |
| Jordan | NORTH-CAROLINA | 4 | 2008 |
| Cherryville | NORTH-CAROLINA | 4 | 1966 |
| Metasville | GEORGIA | 3 | 2000 |
| Whitesburg | GEORGIA | 3 | 2024 |
| Elamsville | VIRGINIA | 3 | 2014 |
| Ringgold | VIRGINIA | 3 | 2023 |
| Appomattox | VIRGINIA | 3 | 2024 |
| Millerville | ALABAMA | 2 | 2023 |
| Liberty City | ALABAMA | 2 | 2009 |
| Wedowee | ALABAMA | 2 | 2022 |
| Crest | GEORGIA | 2 | 2018 |
| Siloam | GEORGIA | 2 | 2013 |
| Hiram | GEORGIA | 2 | 2018 |
| Juliette | GEORGIA | 2 | 2024 |
| Lincolnton 2 | GEORGIA | 2 | 2023 |
| Curry Hill | GEORGIA | 2 | 2019 |
| Good Hope | GEORGIA | 2 | 2024 |
| Emmitsburg | MARYLAND | 2 | 2024 |
| Olney | MARYLAND | 2 | 2024 |
| Eklo | MARYLAND | 2 | 2018 |
| Madonna | MARYLAND | 2 | 2022 |
| Earlton | MARYLAND | 2 | 2022 |
| Mooresville | NORTH-CAROLINA | 2 | 2001 |
Source: USGS North American Breeding Bird Survey, retrieved 2026-05-22.