Species · Nevada · BBS 2025 Release · 1966–2024
Vesper Sparrow Population Trend in Nevada
Vesper Sparrow in Nevada has surged: up 202% on the route-weighted index since 1971.
+202%Since 1971
35Routes In State
50Years
Notable Vesper Sparrow Trends in Nevada
long arc increasecomputed index
Vesper Sparrow has surged in Nevada: up 201% on the route-weighted index since 1971.
Vesper Sparrow Population Forecast in Nevada
If the recent trend holds, Vesper Sparrow in Nevada is projected to stay roughly flat through 2029, near 11 (95% range 4.7–18). A 5-year backtest shows a typical error of ±25.5%, with 100% of held-out values landing inside the 95% band.
+3%Change by 2029
11Projected 2029 index
4.7–1895% range
±25.5%Backtest error
| Year | Projected index | 95% low | 95% high |
|---|---|---|---|
| 2025 | 11 | 4.1 | 17 |
| 2026 | 11 | 4.2 | 17 |
| 2027 | 11 | 4.4 | 17 |
| 2028 | 11 | 4.5 | 18 |
| 2029 | 11 | 4.7 | 18 |
Vesper Sparrow Survey Routes in Nevada
| Charleston Reservoir | 95 | 2024 | 2024 |
| Ranchogrande | 60 | 2024 | 1988 |
| Humboldt Nf | 53 | 2019 | 1993 |
| Humboldt Nf 2 | 50 | 2024 | 2021 |
| Dinner Sta | 35 | 1993 | 1968 |
| Bald Mtn. | 34 | 2024 | 1992 |
| Midas | 33 | 2024 | 1974 |
| Sheldon Nwr | 30 | 2019 | 1992 |
| Mizpah | 18 | 2024 | 1988 |
| Jean Lake | 13 | 1973 | 1973 |
| Ruby Valley | 11 | 2001 | 1997 |
| Walker Can | 10 | 2024 | 1968 |
| Austin | 9 | 2018 | 2013 |
| Dobbin Creek | 8 | 2018 | 1980 |
| Hawthorne | 8 | 2001 | 1997 |
| Illipah | 7 | 2015 | 1968 |
| Minerva | 5 | 2015 | 1988 |
| Chimney Res. | 5 | 2013 | 2013 |
| Gardnerville | 4 | 2011 | 1995 |
| Comins Lake | 3 | 2016 | 2005 |
| Toiyabe Nf | 3 | 2024 | 2003 |
| Cortez | 2 | 2022 | 2018 |
| Eureka | 2 | 2022 | 1971 |
| Thorne | 2 | 1978 | 1978 |
| Willis | 2 | 2014 | 1995 |
Vesper Sparrow Population Trend in Other States
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Source: USGS North American Breeding Bird Survey, retrieved 2026-05-22.