Species · New Jersey · BBS 2025 Release · 1966–2024
Pine Warbler Population Trend in New Jersey
Pine Warbler in New Jersey has surged: up 261% on the route-weighted index since 1968.
+261%Since 1968
29Routes In State
58Years
Notable Pine Warbler Trends in New Jersey
long arc increasecomputed index
Pine Warbler has surged in New Jersey: up 261% on the route-weighted index since 1968.
Pine Warbler Population Forecast in New Jersey
If the recent trend holds, Pine Warbler in New Jersey is projected to fall about 26% by 2029 — from 10 in 2024 to a central estimate of 7.5 (95% range 0.16–15). A 5-year backtest shows a typical error of ±28.5%, with 80% of held-out values landing inside the 95% band.
-26%Change by 2029
7.5Projected 2029 index
0.16–1595% range
±28.5%Backtest error
| Year | Projected index | 95% low | 95% high |
|---|---|---|---|
| 2025 | 7.3 | 0.00 | 15 |
| 2026 | 7.4 | 0.00 | 15 |
| 2027 | 7.4 | 0.05 | 15 |
| 2028 | 7.5 | 0.11 | 15 |
| 2029 | 7.5 | 0.16 | 15 |
Pine Warbler Survey Routes in New Jersey
| Spraguetown 3 | 75 | 2024 | 2021 |
| Friendship | 48 | 2024 | 1977 |
| Pomona | 46 | 2024 | 1978 |
| Winslow | 25 | 2024 | 1989 |
| Estell Manor | 22 | 2022 | 2021 |
| Bennett Mill | 14 | 2000 | 1966 |
| Del Haven | 12 | 1991 | 1991 |
| Spraguetown 2 | 12 | 2012 | 2000 |
| Villas | 12 | 1981 | 1979 |
| Toms River | 10 | 2024 | 1966 |
| Spraguetown | 9 | 1999 | 1977 |
| Cape May Ch | 9 | 2013 | 1992 |
| Holmansville | 8 | 2009 | 1969 |
| Bennett Mill 2 | 6 | 2024 | 2016 |
| Albion | 5 | 2022 | 1967 |
| Mt Misery | 3 | 1989 | 1976 |
| Woodbury Hgt | 2 | 2006 | 1988 |
| New Bedford | 2 | 2017 | 1969 |
| Midvale | 2 | 2014 | 1977 |
| Kemah Lake | 2 | 2017 | 2005 |
| Dover | 2 | 2022 | 1992 |
| Greenwich | 1 | 2024 | 1982 |
| Six Points | 1 | 2024 | 1978 |
| Ancora | 1 | 1977 | 1966 |
| Sandbrook | 1 | 2021 | 2013 |
Pine Warbler Population Trend in Other States
Source: USGS North American Breeding Bird Survey, retrieved 2026-05-22.