Species · Virginia · BBS 2025 Release · 1966–2024
Worm-eating Warbler Population Trend in Virginia
Worm-eating Warbler in Virginia has surged: up 408% on the route-weighted index since 1968.
+408%Since 1968
72Routes In State
58Years
Notable Worm-eating Warbler Trends in Virginia
long arc increasecomputed index
Worm-eating Warbler has surged in Virginia: up 408% on the route-weighted index since 1968.
Worm-eating Warbler Population Forecast in Virginia
If the recent trend holds, Worm-eating Warbler in Virginia is projected to rise about 61% by 2029 — from 1.5 in 2024 to a central estimate of 2.5 (95% range 1.6–3.3). A 5-year backtest shows a typical error of ±21.1%, with 80% of held-out values landing inside the 95% band.
+61%Change by 2029
2.5Projected 2029 index
1.6–3.395% range
±21.1%Backtest error
| Year | Projected index | 95% low | 95% high |
|---|---|---|---|
| 2025 | 2.3 | 1.5 | 3.2 |
| 2026 | 2.4 | 1.5 | 3.2 |
| 2027 | 2.4 | 1.6 | 3.2 |
| 2028 | 2.4 | 1.6 | 3.3 |
| 2029 | 2.5 | 1.6 | 3.3 |
Worm-eating Warbler Survey Routes in Virginia
| Front Royal | 12 | 2024 | 1993 |
| Gr North Mtn | 8 | 2024 | 1993 |
| Glenwood | 8 | 2023 | 1992 |
| Shenandoa Np | 8 | 2022 | 1994 |
| W Augusta | 7 | 2024 | 1967 |
| Bald Knob | 7 | 2024 | 1992 |
| Douthat | 7 | 2012 | 1992 |
| Marion | 6 | 1982 | 1977 |
| Stanley | 5 | 2024 | 1969 |
| Covington | 5 | 2024 | 1966 |
| Big Meadows | 5 | 2024 | 1993 |
| Iron Mtn. | 5 | 2007 | 1998 |
| Rural Retrt | 4 | 2024 | 1982 |
| Truhart | 4 | 2024 | 1996 |
| Shipman | 3 | 2024 | 1984 |
| Pine Mtn. | 3 | 2024 | 1996 |
| Dismal Swamp | 3 | 2016 | 1992 |
| Loft Mtn | 3 | 2023 | 1993 |
| Potts Mtn. | 3 | 2013 | 1992 |
| Carters Brdg 2 | 3 | 2023 | 2015 |
| Star Tannery | 2 | 2023 | 1977 |
| Edinburg | 2 | 2024 | 1969 |
| Natural Brid | 2 | 2024 | 1990 |
| Concord | 2 | 2024 | 2024 |
| Mannboro | 2 | 2019 | 1985 |
Worm-eating Warbler Population Trend in Other States
Source: USGS North American Breeding Bird Survey, retrieved 2026-05-22.