Species · BCR 17 · BBS 2025 Release · 1966–2024
Common Poorwill In Badlands and Prairies
Common Poorwill in Badlands and Prairies has collapsed: down 77% on the route-weighted index since 1982.
-77%Since 1982
14Routes In Region
18Years
Notable Signals
long arc declinecomputed index
Common Poorwill has collapsed in Badlands and Prairies: down 77% on the route-weighted index since 1982.
Forecast
If the recent trend holds, Common Poorwill in Badlands and Prairies is projected to stay roughly flat through 2029, near 0.00 (95% range 0.00–0.12). A 5-year backtest shows a typical error of ±228.5%, with 100% of held-out values landing inside the 95% band.
n/aChange by 2029
0.00Projected 2029 index
0.00–0.1295% range
±228.5%Backtest error
| Year | Projected index | 95% low | 95% high |
|---|---|---|---|
| 2025 | 0.00 | 0.00 | 0.12 |
| 2026 | 0.00 | 0.00 | 0.12 |
| 2027 | 0.00 | 0.00 | 0.12 |
| 2028 | 0.00 | 0.00 | 0.12 |
| 2029 | 0.00 | 0.00 | 0.12 |
Routes In Badlands and Prairies
| Teapot Dome | WYOMING | 8 | 1983 |
| Natrona | WYOMING | 2 | 1990 |
| Locate | MONTANA | 1 | 2003 |
| Reed Point | MONTANA | 1 | 2022 |
| Reva | SOUTH-DAKOTA | 1 | 2001 |
| Long Draw | SOUTH-DAKOTA | 1 | 2011 |
| Silver City | SOUTH-DAKOTA | 1 | 2002 |
| Elk Mountain | SOUTH-DAKOTA | 1 | 1998 |
| Hazelrodt | SOUTH-DAKOTA | 1 | 2021 |
| Lightning Cr | SOUTH-DAKOTA | 1 | 2017 |
| Dayton | WYOMING | 1 | 1983 |
| Arvada | WYOMING | 1 | 2024 |
| Mayoworth | WYOMING | 1 | 2006 |
| Bucknum | WYOMING | 1 | 2024 |
Source: USGS North American Breeding Bird Survey, retrieved 2026-05-22.