Species · Nevada · BBS 2025 Release · 1966–2024
American Bittern Population Trend in Nevada
American Bittern in Nevada has surged: up 100% on the route-weighted index since 1998.
+100%Since 1998
7Routes In State
21Years
Notable American Bittern Trends in Nevada
long arc increasecomputed index
American Bittern has surged in Nevada: up 100% on the route-weighted index since 1998.
American Bittern Population Forecast in Nevada
If the recent trend holds, American Bittern in Nevada is projected to fall about 43% by 2023 — from 0.24 in 2018 to a central estimate of 0.14 (95% range 0.00–0.29). A 5-year backtest shows a typical error of ±143.4%, with 100% of held-out values landing inside the 95% band.
-43%Change by 2023
0.14Projected 2023 index
0.00–0.2995% range
±143.4%Backtest error
| Year | Projected index | 95% low | 95% high |
|---|---|---|---|
| 2019 | 0.14 | 0.00 | 0.28 |
| 2020 | 0.14 | 0.00 | 0.29 |
| 2021 | 0.14 | 0.00 | 0.29 |
| 2022 | 0.14 | 0.00 | 0.29 |
| 2023 | 0.14 | 0.00 | 0.29 |
American Bittern Survey Routes in Nevada
| Virgin Creek | 5 | 2018 | 1995 |
| Ash Meadows | 2 | 2018 | 1998 |
| Eureka | 2 | 2000 | 1999 |
| Gardnerville | 2 | 2006 | 1997 |
| Ruby Valley 2 | 1 | 2016 | 2007 |
| Fallon | 1 | 2005 | 1999 |
| Gardnerville 2 | 1 | 2018 | 2018 |
American Bittern Population Trend in Other States
alaskacaliforniacoloradoconnecticutdelawarefloridageorgiaidahoillinoisindianaiowakansaslouisianamainemarylandmassachusettsmichiganminnesotamississippimissourimontananebraskanew-hampshirenew-jerseynew-mexiconew-yorknorth-dakotaohiooklahomaoregonpennsylvaniasouth-carolinasouth-dakotatexasutahvermontvirginiawashingtonwest-virginiawisconsinwyoming
Source: USGS North American Breeding Bird Survey, retrieved 2026-05-22.