Species · BCR 28 · BBS 2025 Release · 1966–2024
Northern Harrier In Appalachian Mountains
Northern Harrier in Appalachian Mountains has declined: down 49% on the route-weighted index since 1969.
-49%Since 1969
60Routes In Region
50Years
Notable Signals
No notable trend signals for Northern Harrier in Appalachian Mountains. See the full index history below.
Forecast
If the recent trend holds, Northern Harrier in Appalachian Mountains is projected to stay roughly flat through 2028, near 0.01 (95% range 0.00–0.04). A 5-year backtest shows a typical error of ±141.2%, with 100% of held-out values landing inside the 95% band.
n/aChange by 2028
0.01Projected 2028 index
0.00–0.0495% range
±141.2%Backtest error
| Year | Projected index | 95% low | 95% high |
|---|---|---|---|
| 2024 | 0.01 | 0.00 | 0.04 |
| 2025 | 0.01 | 0.00 | 0.04 |
| 2026 | 0.01 | 0.00 | 0.04 |
| 2027 | 0.01 | 0.00 | 0.04 |
| 2028 | 0.01 | 0.00 | 0.04 |
Routes In Appalachian Mountains
| Gainesville | NEW-YORK | 3 | 1997 |
| Dryden | NEW-YORK | 2 | 2022 |
| Centerville | NEW-YORK | 2 | 1991 |
| Swain 2 | NEW-YORK | 2 | 2023 |
| Winterset | OHIO | 2 | 1967 |
| Shelocta | PENNSYLVANIA | 2 | 2017 |
| Ryde | PENNSYLVANIA | 2 | 1992 |
| Kehoe 2 | KENTUCKY | 1 | 2013 |
| Williamsport | MARYLAND | 1 | 2008 |
| Cooperstown | NEW-YORK | 1 | 1969 |
| Meridale | NEW-YORK | 1 | 1995 |
| Oneonta | NEW-YORK | 1 | 1969 |
| Oxford | NEW-YORK | 1 | 1974 |
| Vestal Ctr | NEW-YORK | 1 | 2013 |
| Phillips Cr | NEW-YORK | 1 | 2013 |
| Swain | NEW-YORK | 1 | 2002 |
| East Java | NEW-YORK | 1 | 1987 |
| Oxford 2 | NEW-YORK | 1 | 2003 |
| Dresden | OHIO | 1 | 2001 |
| Cumberland | OHIO | 1 | 1979 |
| Stonecreek | OHIO | 1 | 2002 |
| Birmingham | OHIO | 1 | 2011 |
| Petersburg | OHIO | 1 | 1999 |
| Keene | OHIO | 1 | 2002 |
| Sigel | PENNSYLVANIA | 1 | 1995 |
Source: USGS North American Breeding Bird Survey, retrieved 2026-05-22.