Species · BCR 29 · BBS 2025 Release · 1966–2024
Blue-headed Vireo In Piedmont
Blue-headed Vireo in Piedmont has surged: up 136% on the route-weighted index since 1976.
+136%Since 1976
66Routes In Region
47Years
Notable Signals
long arc increasecomputed index
Blue-headed Vireo has surged in Piedmont: up 136% on the route-weighted index since 1976.
Forecast
If the recent trend holds, Blue-headed Vireo in Piedmont is projected to rise about 140% by 2029 — from 0.09 in 2024 to a central estimate of 0.21 (95% range 0.04–0.39). A 5-year backtest shows a typical error of ±153.1%, with 80% of held-out values landing inside the 95% band.
+140%Change by 2029
0.21Projected 2029 index
0.04–0.3995% range
±153.1%Backtest error
| Year | Projected index | 95% low | 95% high |
|---|---|---|---|
| 2025 | 0.20 | 0.03 | 0.38 |
| 2026 | 0.21 | 0.03 | 0.38 |
| 2027 | 0.21 | 0.03 | 0.39 |
| 2028 | 0.21 | 0.03 | 0.39 |
| 2029 | 0.21 | 0.04 | 0.39 |
Routes In Piedmont
| Tryme | VIRGINIA | 11 | 2006 |
| Durham | NORTH-CAROLINA | 7 | 2021 |
| Ball Ground | GEORGIA | 5 | 2021 |
| Piedmont Nwr | GEORGIA | 4 | 2003 |
| Whitmire | SOUTH-CAROLINA | 4 | 2024 |
| Grovetown | GEORGIA | 3 | 1981 |
| Juliette | GEORGIA | 3 | 2016 |
| Ashland | NORTH-CAROLINA | 3 | 2021 |
| Sharon | GEORGIA | 2 | 2022 |
| Oakboro | NORTH-CAROLINA | 2 | 1978 |
| Madison | NORTH-CAROLINA | 2 | 1977 |
| Waco | NORTH-CAROLINA | 2 | 2018 |
| Gupton | NORTH-CAROLINA | 2 | 2016 |
| Salem Xrd | SOUTH-CAROLINA | 2 | 2007 |
| Campobello | SOUTH-CAROLINA | 2 | 2011 |
| Blacksburg | SOUTH-CAROLINA | 2 | 1999 |
| Wedowee | ALABAMA | 1 | 2008 |
| Forsyth | GEORGIA | 1 | 1994 |
| Crest | GEORGIA | 1 | 2018 |
| Lincolnton | GEORGIA | 1 | 2008 |
| Maxeys | GEORGIA | 1 | 2017 |
| Baldwin | GEORGIA | 1 | 2007 |
| Siloam | GEORGIA | 1 | 1967 |
| Bowdon | GEORGIA | 1 | 2016 |
| Rutledge | GEORGIA | 1 | 2005 |
Source: USGS North American Breeding Bird Survey, retrieved 2026-05-22.