Species · BCR 29 · BBS 2025 Release · 1966–2024
Least Flycatcher In Piedmont
Least Flycatcher in Piedmont has collapsed: down 85% on the route-weighted index since 1969.
-85%Since 1969
18Routes In Region
25Years
Notable Signals
long arc declinecomputed index
Least Flycatcher has collapsed in Piedmont: down 85% on the route-weighted index since 1969.
Forecast
If the recent trend holds, Least Flycatcher in Piedmont is projected to stay roughly flat through 2019, near 0.00 (95% range 0.00–0.06). A 5-year backtest shows a typical error of ±196.3%, with 100% of held-out values landing inside the 95% band.
n/aChange by 2019
0.00Projected 2019 index
0.00–0.0695% range
±196.3%Backtest error
| Year | Projected index | 95% low | 95% high |
|---|---|---|---|
| 2015 | 0.01 | 0.00 | 0.06 |
| 2016 | 0.00 | 0.00 | 0.06 |
| 2017 | 0.00 | 0.00 | 0.06 |
| 2018 | 0.00 | 0.00 | 0.06 |
| 2019 | 0.00 | 0.00 | 0.06 |
Routes In Piedmont
| West Grove | PENNSYLVANIA | 5 | 1992 |
| Taylorstown | VIRGINIA | 4 | 1985 |
| Croton | NEW-JERSEY | 2 | 1970 |
| Pottersville | NEW-JERSEY | 2 | 1989 |
| Collegeville | PENNSYLVANIA | 2 | 1971 |
| Labott | PENNSYLVANIA | 2 | 1969 |
| Silver Spg | MARYLAND | 1 | 1966 |
| Randallstown | MARYLAND | 1 | 1977 |
| Van Bibber | MARYLAND | 1 | 1982 |
| Sandbrook | NEW-JERSEY | 1 | 2007 |
| Jordan | NORTH-CAROLINA | 1 | 1987 |
| Mt Gretna | PENNSYLVANIA | 1 | 1969 |
| Aspers | PENNSYLVANIA | 1 | 1974 |
| Mt Gretna 2 | PENNSYLVANIA | 1 | 2002 |
| Barton Creek | SOUTH-CAROLINA | 1 | 2011 |
| Tryme | VIRGINIA | 1 | 2014 |
| Shipman | VIRGINIA | 1 | 1972 |
| Elamsville | VIRGINIA | 1 | 1993 |
Source: USGS North American Breeding Bird Survey, retrieved 2026-05-22.