Species · BCR 24 · BBS 2025 Release · 1966–2024
Warbling Vireo In Central Hardwoods
Warbling Vireo in Central Hardwoods has surged: up 129% on the route-weighted index since 1968.
+129%Since 1968
129Routes In Region
58Years
Notable Signals
long arc increasecomputed index
Warbling Vireo has surged in Central Hardwoods: up 129% on the route-weighted index since 1968.
Forecast
If the recent trend holds, Warbling Vireo in Central Hardwoods is projected to rise about 25% by 2029 — from 2.0 in 2024 to a central estimate of 2.5 (95% range 1.7–3.4). A 5-year backtest shows a typical error of ±21.3%, with 100% of held-out values landing inside the 95% band.
+25%Change by 2029
2.5Projected 2029 index
1.7–3.495% range
±21.3%Backtest error
| Year | Projected index | 95% low | 95% high |
|---|---|---|---|
| 2025 | 2.4 | 1.6 | 3.3 |
| 2026 | 2.5 | 1.6 | 3.3 |
| 2027 | 2.5 | 1.6 | 3.4 |
| 2028 | 2.5 | 1.7 | 3.4 |
| 2029 | 2.5 | 1.7 | 3.4 |
Routes In Central Hardwoods
| Brownville | ILLINOIS | 11 | 2019 |
| Centerton | ARKANSAS | 10 | 2024 |
| York | ILLINOIS | 10 | 2024 |
| Spencer | INDIANA | 10 | 2024 |
| Brazil | INDIANA | 9 | 2024 |
| Hodgenville 2 | KENTUCKY | 9 | 2023 |
| Pleasurevill | KENTUCKY | 9 | 2024 |
| Woodlandville | MISSOURI | 9 | 2024 |
| Birds | ILLINOIS | 8 | 2024 |
| Glencoe | KENTUCKY | 8 | 2018 |
| Newberry | INDIANA | 7 | 2024 |
| Merrimac | KENTUCKY | 7 | 2024 |
| Johnsonville | KENTUCKY | 7 | 2021 |
| Sewell Shop | KENTUCKY | 7 | 2023 |
| Million 2 | KENTUCKY | 7 | 2024 |
| Whitewater | MISSOURI | 7 | 2024 |
| Royalton | ILLINOIS | 6 | 2024 |
| Washington | INDIANA | 6 | 2024 |
| Indian Spgs | INDIANA | 6 | 2024 |
| Clear Spring | INDIANA | 6 | 2024 |
| Boxville | KENTUCKY | 6 | 1983 |
| Shelbyville | KENTUCKY | 6 | 1978 |
| Buena Vista | KENTUCKY | 6 | 2017 |
| Bremen | ILLINOIS | 5 | 2024 |
| Pimento | INDIANA | 5 | 2024 |
Source: USGS North American Breeding Bird Survey, retrieved 2026-05-22.