Species · BCR 9 · BBS 2025 Release · 1966–2024
Merlin In Great Basin
Merlin in Great Basin has declined: down 39% on the route-weighted index since 1976.
-39%Since 1976
12Routes In Region
18Years
Notable Signals
No notable trend signals for Merlin in Great Basin. See the full index history below.
Forecast
If the recent trend holds, Merlin in Great Basin is projected to stay roughly flat through 2029, near 0.01 (95% range 0.00–0.04). A 5-year backtest shows a typical error of ±133.2%, with 100% of held-out values landing inside the 95% band.
n/aChange by 2029
0.01Projected 2029 index
0.00–0.0495% range
±133.2%Backtest error
| Year | Projected index | 95% low | 95% high |
|---|---|---|---|
| 2025 | 0.01 | 0.00 | 0.05 |
| 2026 | 0.01 | 0.00 | 0.05 |
| 2027 | 0.01 | 0.00 | 0.05 |
| 2028 | 0.01 | 0.00 | 0.05 |
| 2029 | 0.01 | 0.00 | 0.04 |
Routes In Great Basin
| Blacks Creek | IDAHO | 5 | 1982 |
| Reardan | WASHINGTON | 2 | 2024 |
| Springfield | IDAHO | 1 | 1980 |
| Ririe | IDAHO | 1 | 2010 |
| Kyle Canyon | IDAHO | 1 | 2024 |
| Montague | OREGON | 1 | 1997 |
| Twisp | WASHINGTON | 1 | 1998 |
| Ardenvoir | WASHINGTON | 1 | 1971 |
| Kendall | WASHINGTON | 1 | 2008 |
| Glacier | WASHINGTON | 1 | 2004 |
| Nighthawk | WASHINGTON | 1 | 2024 |
| Yakima | WASHINGTON | 1 | 2018 |
Source: USGS North American Breeding Bird Survey, retrieved 2026-05-22.