Species · BCR 18 · BBS 2025 Release · 1966–2024
Summer Tanager In Shortgrass Prairie
Summer Tanager in Shortgrass Prairie has edged down: down 19% on the route-weighted index since 1989.
-19%Since 1989
6Routes In Region
26Years
Notable Signals
No notable trend signals for Summer Tanager in Shortgrass Prairie. See the full index history below.
Forecast
If the recent trend holds, Summer Tanager in Shortgrass Prairie is projected to stay roughly flat through 2026, near 0.02 (95% range 0.00–0.04). A 5-year backtest shows a typical error of ±41.4%, with 80% of held-out values landing inside the 95% band.
n/aChange by 2026
0.02Projected 2026 index
0.00–0.0495% range
±41.4%Backtest error
| Year | Projected index | 95% low | 95% high |
|---|---|---|---|
| 2022 | 0.02 | 0.00 | 0.04 |
| 2023 | 0.02 | 0.00 | 0.04 |
| 2024 | 0.02 | 0.00 | 0.04 |
| 2025 | 0.02 | 0.00 | 0.04 |
| 2026 | 0.02 | 0.00 | 0.04 |
Routes In Shortgrass Prairie
Source: USGS North American Breeding Bird Survey, retrieved 2026-05-22.