Species · BCR 26 · BBS 2025 Release · 1966–2024
Eastern Whip-poor-will In Mississippi Alluvial Valley
Eastern Whip-poor-will in Mississippi Alluvial Valley has collapsed: down 77% on the route-weighted index since 1971.
-77%Since 1971
5Routes In Region
36Years
Notable Signals
long arc declinecomputed index
Eastern Whip-poor-will has collapsed in Mississippi Alluvial Valley: down 77% on the route-weighted index since 1971.
Forecast
If the recent trend holds, Eastern Whip-poor-will in Mississippi Alluvial Valley is projected to stay roughly flat through 2017, near 0.07 (95% range 0.00–0.36). A 5-year backtest shows a typical error of ±441.4%, with 100% of held-out values landing inside the 95% band.
n/aChange by 2017
0.07Projected 2017 index
0.00–0.3695% range
±441.4%Backtest error
| Year | Projected index | 95% low | 95% high |
|---|---|---|---|
| 2013 | 0.08 | 0.00 | 0.38 |
| 2014 | 0.08 | 0.00 | 0.37 |
| 2015 | 0.07 | 0.00 | 0.37 |
| 2016 | 0.07 | 0.00 | 0.36 |
| 2017 | 0.07 | 0.00 | 0.36 |
Routes In Mississippi Alluvial Valley
Source: USGS North American Breeding Bird Survey, retrieved 2026-05-22.