Species · BCR 18 · BBS 2025 Release · 1966–2024
Verdin In Shortgrass Prairie
Verdin in Shortgrass Prairie has fallen sharply: down 70% on the route-weighted index since 1977.
-70%Since 1977
10Routes In Region
30Years
Notable Signals
long arc declinecomputed index
Verdin has fallen sharply in Shortgrass Prairie: down 70% on the route-weighted index since 1977.
Forecast
If the recent trend holds, Verdin in Shortgrass Prairie is projected to stay roughly flat through 2029, near 0.04 (95% range 0.00–0.14). A 5-year backtest shows a typical error of ±46.7%, with 80% of held-out values landing inside the 95% band.
n/aChange by 2029
0.04Projected 2029 index
0.00–0.1495% range
±46.7%Backtest error
| Year | Projected index | 95% low | 95% high |
|---|---|---|---|
| 2025 | 0.04 | 0.00 | 0.14 |
| 2026 | 0.04 | 0.00 | 0.14 |
| 2027 | 0.04 | 0.00 | 0.14 |
| 2028 | 0.04 | 0.00 | 0.14 |
| 2029 | 0.04 | 0.00 | 0.14 |
Routes In Shortgrass Prairie
Source: USGS North American Breeding Bird Survey, retrieved 2026-05-22.