Species · Wyoming · BBS 2025 Release · 1966–2024
Common Poorwill Population Trend in Wyoming
Common Poorwill in Wyoming has fallen sharply: down 55% on the route-weighted index since 1976.
-55%Since 1976
36Routes In State
44Years
Notable Common Poorwill Trends in Wyoming
long arc declinecomputed index
Common Poorwill has fallen sharply in Wyoming: down 55% on the route-weighted index since 1976.
Common Poorwill Population Forecast in Wyoming
If the recent trend holds, Common Poorwill in Wyoming is projected to stay roughly flat through 2029, near 0.03 (95% range 0.00–0.13). A 5-year backtest shows a typical error of ±79.7%, with 80% of held-out values landing inside the 95% band.
n/aChange by 2029
0.03Projected 2029 index
0.00–0.1395% range
±79.7%Backtest error
| Year | Projected index | 95% low | 95% high |
|---|---|---|---|
| 2025 | 0.03 | 0.00 | 0.14 |
| 2026 | 0.03 | 0.00 | 0.13 |
| 2027 | 0.03 | 0.00 | 0.13 |
| 2028 | 0.03 | 0.00 | 0.13 |
| 2029 | 0.03 | 0.00 | 0.13 |
Common Poorwill Survey Routes in Wyoming
| Teapot Dome | 8 | 1983 | 1982 |
| Meeteetse | 3 | 2019 | 2014 |
| Black Rock 2 | 3 | 2023 | 2023 |
| Prior Flats | 2 | 2006 | 2004 |
| Natrona | 2 | 1990 | 1973 |
| Sweetwater | 2 | 2009 | 2007 |
| Fletcher Pk | 2 | 2015 | 1984 |
| Mtn View | 2 | 1982 | 1981 |
| Dubois | 1 | 2015 | 2015 |
| Nowood | 1 | 2003 | 2003 |
| Fontenelle | 1 | 1987 | 1987 |
| Bear Creek | 1 | 2024 | 2023 |
| Ervay | 1 | 2024 | 2011 |
| Cumberland | 1 | 2017 | 1993 |
| Mckinnon | 1 | 1986 | 1972 |
| Buford | 1 | 2023 | 2017 |
| Moose | 1 | 1981 | 1981 |
| Tensleep | 1 | 2015 | 2015 |
| Dayton | 1 | 1983 | 1983 |
| Arvada | 1 | 2024 | 2024 |
| Gebo | 1 | 2016 | 1996 |
| Mayoworth | 1 | 2006 | 1983 |
| Seedskadee | 1 | 2016 | 2016 |
| Rawlins 2 | 1 | 2023 | 2023 |
| Sand Draw | 1 | 2015 | 2014 |
Common Poorwill Population Trend in Other States
Source: USGS North American Breeding Bird Survey, retrieved 2026-05-22.