Species · Virginia · BBS 2025 Release · 1966–2024
Black-crowned Night Heron Population Trend in Virginia
Black-crowned Night Heron in Virginia has declined: down 50% on the route-weighted index since 1988.
-50%Since 1988
7Routes In State
23Years
Notable Black-crowned Night Heron Trends in Virginia
No notable trend signals for Black-crowned Night Heron in Virginia. See the full index history below.
Black-crowned Night Heron Population Forecast in Virginia
If the recent trend holds, Black-crowned Night Heron in Virginia is projected to stay roughly flat through 2029, near 0.03 (95% range 0.00–0.10). A 5-year backtest shows a typical error of ±81.9%, with 100% of held-out values landing inside the 95% band.
n/aChange by 2029
0.03Projected 2029 index
0.00–0.1095% range
±81.9%Backtest error
| Year | Projected index | 95% low | 95% high |
|---|---|---|---|
| 2025 | 0.03 | 0.00 | 0.10 |
| 2026 | 0.03 | 0.00 | 0.10 |
| 2027 | 0.03 | 0.00 | 0.10 |
| 2028 | 0.03 | 0.00 | 0.10 |
| 2029 | 0.03 | 0.00 | 0.10 |
Black-crowned Night Heron Survey Routes in Virginia
| Chincoteag W | 4 | 2003 | 1993 |
| Quinby | 3 | 1988 | 1987 |
| Waverly | 2 | 1986 | 1986 |
| Stanley | 1 | 2024 | 1990 |
| Cape Charles | 1 | 2001 | 1995 |
| Hall | 1 | 2006 | 2006 |
| White Stone | 1 | 1988 | 1988 |
Black-crowned Night Heron Population Trend in Other States
alabamaarizonaarkansascaliforniacoloradoconnecticutdelawarefloridageorgiaidahoillinoisindianaiowakansaskentuckylouisianamainemarylandmassachusettsmichiganminnesotamississippimissourimontananebraskanevadanew-hampshirenew-jerseynew-mexiconew-yorknorth-carolinanorth-dakotaohiooklahomaoregonpennsylvaniarhode-islandsouth-carolinasouth-dakotatennesseetexasutahvermontwashingtonwest-virginiawisconsinwyoming
Source: USGS North American Breeding Bird Survey, retrieved 2026-05-22.