Species · Idaho · BBS 2025 Release · 1966–2024
Clark's Nutcracker Population Trend in Idaho
Clark's Nutcracker in Idaho has declined: down 38% on the route-weighted index since 1974.
-38%Since 1974
30Routes In State
51Years
Notable Clark's Nutcracker Trends in Idaho
No notable trend signals for Clark's Nutcracker in Idaho. See the full index history below.
Clark's Nutcracker Population Forecast in Idaho
If the recent trend holds, Clark's Nutcracker in Idaho is projected to rise about 51% by 2029 — from 0.20 in 2024 to a central estimate of 0.30 (95% range 0.00–0.83). A 5-year backtest shows a typical error of ±82.5%, with 100% of held-out values landing inside the 95% band.
+51%Change by 2029
0.30Projected 2029 index
0.00–0.8395% range
±82.5%Backtest error
| Year | Projected index | 95% low | 95% high |
|---|---|---|---|
| 2025 | 0.32 | 0.00 | 0.84 |
| 2026 | 0.32 | 0.00 | 0.84 |
| 2027 | 0.31 | 0.00 | 0.83 |
| 2028 | 0.31 | 0.00 | 0.83 |
| 2029 | 0.30 | 0.00 | 0.83 |
Clark's Nutcracker Survey Routes in Idaho
| Featherville | 16 | 2010 | 1989 |
| Naples | 12 | 2009 | 1980 |
| Kyle Canyon | 8 | 1987 | 1987 |
| Lolo Pass | 5 | 1998 | 1993 |
| Squirrel | 4 | 2013 | 1984 |
| Rochat Divde | 3 | 2004 | 1994 |
| Almo | 3 | 2018 | 1989 |
| Avery | 2 | 1993 | 1984 |
| Cascade | 2 | 1981 | 1981 |
| Centerville | 2 | 2016 | 1973 |
| Sawtooth City 2 | 2 | 2024 | 2015 |
| Cobalt | 2 | 2015 | 1989 |
| Sunbeam | 2 | 2017 | 1994 |
| Bates | 2 | 1998 | 1998 |
| Nezperce Nf | 2 | 1992 | 1992 |
| Sawtooth Cty | 2 | 2014 | 1988 |
| Mivoden | 1 | 2011 | 1983 |
| Grangeville | 1 | 1995 | 1989 |
| Baker | 1 | 2007 | 2004 |
| Cape Horn | 1 | 2024 | 1987 |
| Challis | 1 | 2024 | 1979 |
| Leadore | 1 | 2024 | 1974 |
| Alturas | 1 | 1987 | 1968 |
| Magic Mtn | 1 | 2018 | 2002 |
| Coolin | 1 | 2011 | 2011 |
Clark's Nutcracker Population Trend in Other States
Source: USGS North American Breeding Bird Survey, retrieved 2026-05-22.