Species · Kentucky · BBS 2025 Release · 1966–2024
Worm-eating Warbler Population Trend in Kentucky
Worm-eating Warbler in Kentucky has risen sharply: up 69% on the route-weighted index since 1968.
+69%Since 1968
43Routes In State
57Years
Notable Worm-eating Warbler Trends in Kentucky
long arc increasecomputed index
Worm-eating Warbler has risen sharply in Kentucky: up 69% on the route-weighted index since 1968.
Worm-eating Warbler Population Forecast in Kentucky
If the recent trend holds, Worm-eating Warbler in Kentucky is projected to rise about 247% by 2029 — from 0.29 in 2024 to a central estimate of 0.99 (95% range 0.15–1.8). A 5-year backtest shows a typical error of ±283%, with 20% of held-out values landing inside the 95% band.
+247%Change by 2029
0.99Projected 2029 index
0.15–1.895% range
±283%Backtest error
| Year | Projected index | 95% low | 95% high |
|---|---|---|---|
| 2025 | 0.94 | 0.10 | 1.8 |
| 2026 | 0.95 | 0.12 | 1.8 |
| 2027 | 0.96 | 0.13 | 1.8 |
| 2028 | 0.98 | 0.14 | 1.8 |
| 2029 | 0.99 | 0.15 | 1.8 |
Worm-eating Warbler Survey Routes in Kentucky
| Cumberlnd Gp | 13 | 2018 | 1968 |
| Mammoth Cave North | 13 | 2013 | 2009 |
| Mammoth Cave | 10 | 2014 | 1995 |
| Beattyville 2 | 7 | 2024 | 2006 |
| Pippa Passes | 4 | 1996 | 1988 |
| Staffordsvil | 4 | 1997 | 1996 |
| Levee 2 | 4 | 2019 | 2019 |
| Monticello | 3 | 2021 | 1969 |
| Levee | 3 | 1980 | 1972 |
| Campton | 3 | 2012 | 1980 |
| Mckee | 2 | 1976 | 1973 |
| Pine Ridge | 2 | 1978 | 1966 |
| Phelps | 2 | 1997 | 1979 |
| Brownsville | 1 | 2023 | 2022 |
| Lovelacevile | 1 | 1989 | 1989 |
| Shiloh | 1 | 1994 | 1971 |
| Canton | 1 | 2015 | 1971 |
| Keysburg | 1 | 1984 | 1977 |
| Riverqueen | 1 | 2022 | 2022 |
| Dixon | 1 | 2008 | 2008 |
| Sulphur Lick | 1 | 1983 | 1983 |
| Hegira | 1 | 2023 | 1993 |
| Sunnybrook | 1 | 2014 | 2014 |
| Bardwell | 1 | 1967 | 1967 |
| Apex | 1 | 2023 | 2008 |
Worm-eating Warbler Population Trend in Other States
Source: USGS North American Breeding Bird Survey, retrieved 2026-05-22.