Species · Idaho · BBS 2025 Release · 1966–2024
Black-throated Sparrow Population Trend in Idaho
Black-throated Sparrow in Idaho has declined: down 40% on the route-weighted index since 1989.
-40%Since 1989
8Routes In State
22Years
Notable Black-throated Sparrow Trends in Idaho
No notable trend signals for Black-throated Sparrow in Idaho. See the full index history below.
Black-throated Sparrow Population Forecast in Idaho
If the recent trend holds, Black-throated Sparrow in Idaho is projected to stay roughly flat through 2020, near 0.05 (95% range 0.00–0.16). A 5-year backtest shows a typical error of ±173.7%, with 100% of held-out values landing inside the 95% band.
n/aChange by 2020
0.05Projected 2020 index
0.00–0.1695% range
±173.7%Backtest error
| Year | Projected index | 95% low | 95% high |
|---|---|---|---|
| 2016 | 0.05 | 0.00 | 0.17 |
| 2017 | 0.05 | 0.00 | 0.17 |
| 2018 | 0.05 | 0.00 | 0.17 |
| 2019 | 0.05 | 0.00 | 0.17 |
| 2020 | 0.05 | 0.00 | 0.16 |
Black-throated Sparrow Survey Routes in Idaho
| Triangle | 4 | 2010 | 1994 |
| Glenns Ferry | 4 | 1985 | 1985 |
| Kyle Canyon | 3 | 2008 | 1999 |
| Hot Spring | 2 | 2014 | 1994 |
| Tractor Flat | 2 | 2006 | 2006 |
| Silver City | 1 | 2015 | 1994 |
| Pasadena Val | 1 | 2003 | 1987 |
| Dougal Res | 1 | 2007 | 2007 |
Black-throated Sparrow Population Trend in Other States
Source: USGS North American Breeding Bird Survey, retrieved 2026-05-22.