Species · Pennsylvania · BBS 2025 Release · 1966–2024
Nashville Warbler Population Trend in Pennsylvania
Nashville Warbler in Pennsylvania has fallen sharply: down 68% on the route-weighted index since 1969.
-68%Since 1969
40Routes In State
52Years
Notable Nashville Warbler Trends in Pennsylvania
No notable trend signals for Nashville Warbler in Pennsylvania. See the full index history below.
Nashville Warbler Population Forecast in Pennsylvania
If the recent trend holds, Nashville Warbler in Pennsylvania is projected to stay roughly flat through 2029, near 0.03 (95% range 0.00–0.08). A 5-year backtest shows a typical error of ±112.7%, with 100% of held-out values landing inside the 95% band.
n/aChange by 2029
0.03Projected 2029 index
0.00–0.0895% range
±112.7%Backtest error
| Year | Projected index | 95% low | 95% high |
|---|---|---|---|
| 2025 | 0.03 | 0.00 | 0.08 |
| 2026 | 0.03 | 0.00 | 0.08 |
| 2027 | 0.03 | 0.00 | 0.08 |
| 2028 | 0.03 | 0.00 | 0.08 |
| 2029 | 0.03 | 0.00 | 0.08 |
Nashville Warbler Survey Routes in Pennsylvania
| Arnot | 2 | 1996 | 1996 |
| Clover | 1 | 1988 | 1988 |
| Ellenton | 1 | 2022 | 1988 |
| Wyalusing | 1 | 2010 | 1989 |
| Whig Hill | 1 | 2010 | 2010 |
| Teepleville | 1 | 1993 | 1971 |
| Rothrock Sf | 1 | 2012 | 2012 |
| Lynch | 1 | 2023 | 1993 |
| Lovelton | 1 | 2019 | 1999 |
| N Pine Grove | 1 | 2016 | 2003 |
| Pottersdale | 1 | 1995 | 1975 |
| Starlight 2 | 1 | 2019 | 2008 |
| Betula | 1 | 2005 | 2001 |
| Ansonia | 1 | 2002 | 2002 |
| Sproul Sf-A | 1 | 2006 | 2003 |
| Rasselas | 1 | 2004 | 1976 |
| Roulette | 1 | 1989 | 1989 |
| Cherry Sprs | 1 | 2010 | 1977 |
| Mawr Glen | 1 | 1994 | 1982 |
| Austinville | 1 | 1987 | 1987 |
| Rush | 1 | 1994 | 1970 |
| Bow Bridge | 1 | 1985 | 1969 |
| Marsh Hill | 1 | 2024 | 1983 |
| Pocono Summit | 1 | 2019 | 1967 |
| Hop Bottom | 1 | 2006 | 1969 |
Nashville Warbler Population Trend in Other States
Source: USGS North American Breeding Bird Survey, retrieved 2026-05-22.