Species · Tennessee · BBS 2025 Release · 1966–2024
Worm-eating Warbler Population Trend in Tennessee
Worm-eating Warbler in Tennessee has surged: up 146% on the route-weighted index since 1968.
+146%Since 1968
40Routes In State
58Years
Notable Worm-eating Warbler Trends in Tennessee
long arc increasecomputed index
Worm-eating Warbler has surged in Tennessee: up 146% on the route-weighted index since 1968.
Worm-eating Warbler Population Forecast in Tennessee
If the recent trend holds, Worm-eating Warbler in Tennessee is projected to rise about 96% by 2029 — from 0.59 in 2024 to a central estimate of 1.2 (95% range 0.56–1.8). A 5-year backtest shows a typical error of ±51.1%, with 80% of held-out values landing inside the 95% band.
+96%Change by 2029
1.2Projected 2029 index
0.56–1.895% range
±51.1%Backtest error
| Year | Projected index | 95% low | 95% high |
|---|---|---|---|
| 2025 | 1.1 | 0.50 | 1.7 |
| 2026 | 1.1 | 0.51 | 1.7 |
| 2027 | 1.1 | 0.53 | 1.7 |
| 2028 | 1.1 | 0.54 | 1.7 |
| 2029 | 1.2 | 0.56 | 1.8 |
Worm-eating Warbler Survey Routes in Tennessee
| Mecca | 8 | 2023 | 1994 |
| Mcfarland | 8 | 1993 | 1967 |
| Harbuck | 7 | 2023 | 1994 |
| Willis Sprng | 4 | 2022 | 1994 |
| Tullahoma | 4 | 2015 | 1968 |
| Collinwood | 3 | 2024 | 1966 |
| Lewis Forest | 3 | 2024 | 1966 |
| Cornpone | 3 | 2024 | 1990 |
| Newfound Gap | 3 | 2018 | 1990 |
| Tellico | 2 | 2021 | 1995 |
| Indian Mound | 2 | 1987 | 1987 |
| Wrigley | 2 | 2022 | 1968 |
| Bradyville | 2 | 2004 | 1972 |
| Trace Collinwood | 2 | 2018 | 2015 |
| Trace Lewis | 2 | 2017 | 2013 |
| Signal Mtn | 1 | 2023 | 1979 |
| Tiptonville | 1 | 2015 | 1969 |
| Jones Gap | 1 | 1986 | 1985 |
| Big Sandy | 1 | 2024 | 2016 |
| Mansfield | 1 | 2024 | 1998 |
| Sweetlips | 1 | 2015 | 1988 |
| Silerton | 1 | 2024 | 2022 |
| Trenton | 1 | 2008 | 2008 |
| Pond Creek | 1 | 2024 | 1972 |
| Campbellsville | 1 | 2017 | 1988 |
Worm-eating Warbler Population Trend in Other States
Source: USGS North American Breeding Bird Survey, retrieved 2026-05-22.