Species · BCR 28 · BBS 2025 Release · 1966–2024
Pied-billed Grebe In Appalachian Mountains
Pied-billed Grebe in Appalachian Mountains has fallen sharply: down 67% on the route-weighted index since 1969.
-67%Since 1969
21Routes In Region
22Years
Notable Signals
No notable trend signals for Pied-billed Grebe in Appalachian Mountains. See the full index history below.
Forecast
If the recent trend holds, Pied-billed Grebe in Appalachian Mountains is projected to stay roughly flat through 2024, near 0.00 (95% range 0.00–0.01). A 5-year backtest shows a typical error of ±117%, with 100% of held-out values landing inside the 95% band.
n/aChange by 2024
0.00Projected 2024 index
0.00–0.0195% range
±117%Backtest error
| Year | Projected index | 95% low | 95% high |
|---|---|---|---|
| 2020 | 0.00 | 0.00 | 0.01 |
| 2021 | 0.00 | 0.00 | 0.01 |
| 2022 | 0.00 | 0.00 | 0.01 |
| 2023 | 0.00 | 0.00 | 0.01 |
| 2024 | 0.00 | 0.00 | 0.01 |
Routes In Appalachian Mountains
| Summitt | ALABAMA | 4 | 1975 |
| Kymulga | ALABAMA | 2 | 2004 |
| Waller | PENNSYLVANIA | 2 | 2012 |
| Soddy | TENNESSEE | 2 | 1976 |
| Pine Grove | ALABAMA | 1 | 1996 |
| Cartersville | GEORGIA | 1 | 2017 |
| Midvale | NEW-JERSEY | 1 | 1993 |
| Kemah Lake | NEW-JERSEY | 1 | 1969 |
| Cobleskill | NEW-YORK | 1 | 1971 |
| E Newark | NEW-YORK | 1 | 1967 |
| Phillips Cr | NEW-YORK | 1 | 1971 |
| Milford | NEW-YORK | 1 | 2019 |
| Arnot | PENNSYLVANIA | 1 | 1995 |
| Little Marsh | PENNSYLVANIA | 1 | 2006 |
| Mawr Glen | PENNSYLVANIA | 1 | 2011 |
| Canadensis | PENNSYLVANIA | 1 | 1978 |
| Poyntelle | PENNSYLVANIA | 1 | 1989 |
| Beaver | PENNSYLVANIA | 1 | 1969 |
| Brunnerville | PENNSYLVANIA | 1 | 1976 |
| Fish Springs | TENNESSEE | 1 | 1969 |
| Stanley | VIRGINIA | 1 | 1993 |
Source: USGS North American Breeding Bird Survey, retrieved 2026-05-22.