Species · Idaho · BBS 2025 Release · 1966–2024
Pine Siskin Population Trend in Idaho
Pine Siskin in Idaho has surged: up 164% on the route-weighted index since 1971.
+164%Since 1971
53Routes In State
55Years
Notable Pine Siskin Trends in Idaho
long arc increasecomputed index
Pine Siskin has surged in Idaho: up 164% on the route-weighted index since 1971.
Pine Siskin Population Forecast in Idaho
If the recent trend holds, Pine Siskin in Idaho is projected to fall about 43% by 2029 — from 6.4 in 2024 to a central estimate of 3.6 (95% range 0.00–9.1). A 5-year backtest shows a typical error of ±46.5%, with 80% of held-out values landing inside the 95% band.
-43%Change by 2029
3.6Projected 2029 index
0.00–9.195% range
±46.5%Backtest error
| Year | Projected index | 95% low | 95% high |
|---|---|---|---|
| 2025 | 3.7 | 0.00 | 9.1 |
| 2026 | 3.7 | 0.00 | 9.1 |
| 2027 | 3.6 | 0.00 | 9.1 |
| 2028 | 3.6 | 0.00 | 9.1 |
| 2029 | 3.6 | 0.00 | 9.1 |
Pine Siskin Survey Routes in Idaho
| Cascade | 75 | 1984 | 1968 |
| Deep Creek | 61 | 1985 | 1985 |
| Rochat Divde | 45 | 2023 | 1993 |
| Naples | 32 | 2024 | 1972 |
| Cobalt | 30 | 2024 | 1989 |
| Challis | 26 | 2024 | 1975 |
| Coolin | 23 | 2024 | 1986 |
| Grangeville | 16 | 2024 | 1987 |
| Avery | 14 | 2023 | 1979 |
| Marble Creek | 14 | 2023 | 1988 |
| Alturas | 13 | 1987 | 1968 |
| Cape Horn | 11 | 2024 | 1972 |
| Lolo Pass | 6 | 2019 | 1992 |
| Magic Mtn | 6 | 2024 | 1987 |
| Featherville | 6 | 2024 | 1989 |
| Pierce | 5 | 2007 | 1990 |
| Sunbeam | 5 | 2019 | 1994 |
| Centerville | 4 | 2019 | 1972 |
| Twin Buttes | 4 | 2005 | 2005 |
| Sawtooth City 2 | 4 | 2024 | 2015 |
| Joel | 4 | 2024 | 1990 |
| Mivoden | 3 | 2023 | 1977 |
| Craters | 3 | 1987 | 1987 |
| Triangle | 3 | 2021 | 1987 |
| Burgdorf | 3 | 2015 | 1988 |
Pine Siskin Population Trend in Other States
Source: USGS North American Breeding Bird Survey, retrieved 2026-05-22.