Species · BCR 18 · BBS 2025 Release · 1966–2024
Hepatic Tanager In Shortgrass Prairie
Hepatic Tanager in Shortgrass Prairie has surged: up 78% on the route-weighted index since 1997.
+78%Since 1997
4Routes In Region
18Years
Notable Signals
No notable trend signals for Hepatic Tanager in Shortgrass Prairie. See the full index history below.
Forecast
If the recent trend holds, Hepatic Tanager in Shortgrass Prairie is projected to stay roughly flat through 2026, near 0.03 (95% range 0.01–0.05). A 5-year backtest shows a typical error of ±47.6%, with 80% of held-out values landing inside the 95% band.
n/aChange by 2026
0.03Projected 2026 index
0.01–0.0595% range
±47.6%Backtest error
| Year | Projected index | 95% low | 95% high |
|---|---|---|---|
| 2022 | 0.03 | 0.01 | 0.05 |
| 2023 | 0.03 | 0.01 | 0.05 |
| 2024 | 0.03 | 0.01 | 0.05 |
| 2025 | 0.03 | 0.01 | 0.05 |
| 2026 | 0.03 | 0.01 | 0.05 |
Routes In Shortgrass Prairie
| Sabinoso | NEW-MEXICO | 4 | 2021 |
| Villegreen | COLORADO | 1 | 2019 |
| Ninaview | COLORADO | 1 | 2000 |
| Variadero | NEW-MEXICO | 1 | 2019 |
Source: USGS North American Breeding Bird Survey, retrieved 2026-05-22.