Species · BCR 18 · BBS 2025 Release · 1966–2024
Song Sparrow In Shortgrass Prairie
Song Sparrow in Shortgrass Prairie has fallen sharply: down 53% on the route-weighted index since 1974.
-53%Since 1974
29Routes In Region
40Years
Notable Signals
long arc declinecomputed index
Song Sparrow has fallen sharply in Shortgrass Prairie: down 53% on the route-weighted index since 1974.
Forecast
If the recent trend holds, Song Sparrow in Shortgrass Prairie is projected to stay roughly flat through 2029, near 0.06 (95% range 0.00–0.14). A 5-year backtest shows a typical error of ±111.5%, with 100% of held-out values landing inside the 95% band.
+0%Change by 2029
0.06Projected 2029 index
0.00–0.1495% range
±111.5%Backtest error
| Year | Projected index | 95% low | 95% high |
|---|---|---|---|
| 2025 | 0.06 | 0.00 | 0.14 |
| 2026 | 0.06 | 0.00 | 0.14 |
| 2027 | 0.06 | 0.00 | 0.14 |
| 2028 | 0.06 | 0.00 | 0.14 |
| 2029 | 0.06 | 0.00 | 0.14 |
Routes In Shortgrass Prairie
| Yoder | WYOMING | 5 | 1971 |
| Elbert | COLORADO | 3 | 2024 |
| Arsenal | COLORADO | 3 | 2015 |
| Kiowa | COLORADO | 2 | 2017 |
| Last Chance | COLORADO | 2 | 2016 |
| Hudson | COLORADO | 2 | 2023 |
| Adams Co. | COLORADO | 2 | 2016 |
| Gordon Creek | COLORADO | 2 | 2023 |
| Ninaview | COLORADO | 2 | 1996 |
| Paxton | NEBRASKA | 2 | 2016 |
| Cheyenne | WYOMING | 2 | 2024 |
| Briggsdale | COLORADO | 1 | 1988 |
| Pinneo | COLORADO | 1 | 1977 |
| Two Buttes | COLORADO | 1 | 1992 |
| Bethune | COLORADO | 1 | 1995 |
| Neegrande | COLORADO | 1 | 1998 |
| Fort Morgan | COLORADO | 1 | 2009 |
| Bennett | COLORADO | 1 | 2018 |
| Flagler | COLORADO | 1 | 2023 |
| Doyle Bridge 2 | COLORADO | 1 | 2019 |
| Arsenal 2 | COLORADO | 1 | 2023 |
| Dalton | NEBRASKA | 1 | 2003 |
| Crawford | NEBRASKA | 1 | 2004 |
| Agate 2 | NEBRASKA | 1 | 2007 |
| Hay Springs | NEBRASKA | 1 | 2019 |
Source: USGS North American Breeding Bird Survey, retrieved 2026-05-22.