Species · Washington · BBS 2025 Release · 1966–2024
Common Nighthawk Population Trend in Washington
Common Nighthawk in Washington has surged: up 101% on the route-weighted index since 1970.
+101%Since 1970
101Routes In State
56Years
Notable Common Nighthawk Trends in Washington
long arc increasecomputed index
Common Nighthawk has surged in Washington: up 101% on the route-weighted index since 1970.
Common Nighthawk Population Forecast in Washington
If the recent trend holds, Common Nighthawk in Washington is projected to rise about 97% by 2029 — from 0.88 in 2024 to a central estimate of 1.7 (95% range 0.39–3.1). A 5-year backtest shows a typical error of ±81.2%, with 100% of held-out values landing inside the 95% band.
+97%Change by 2029
1.7Projected 2029 index
0.39–3.195% range
±81.2%Backtest error
| Year | Projected index | 95% low | 95% high |
|---|---|---|---|
| 2025 | 1.7 | 0.35 | 3.0 |
| 2026 | 1.7 | 0.36 | 3.0 |
| 2027 | 1.7 | 0.38 | 3.0 |
| 2028 | 1.7 | 0.39 | 3.1 |
| 2029 | 1.7 | 0.39 | 3.1 |
Common Nighthawk Survey Routes in Washington
| Hanford Site | 51 | 1996 | 1988 |
| Columbia Nwr | 23 | 2022 | 1992 |
| Horn Rapids | 13 | 2024 | 2005 |
| Arid Land Er | 11 | 1996 | 1988 |
| Harrington | 8 | 2012 | 1972 |
| Pomona | 8 | 1999 | 1998 |
| Keller | 6 | 2005 | 1970 |
| Mercer | 6 | 2019 | 1978 |
| Mesa | 6 | 2008 | 1994 |
| Snowden | 5 | 2024 | 1971 |
| Ellensburg | 5 | 2024 | 1982 |
| Mt Rainier | 5 | 1993 | 1990 |
| Omak Creek | 5 | 2024 | 1996 |
| Lake Chelan | 5 | 2018 | 1989 |
| Kendall | 4 | 2024 | 1986 |
| Nighthawk | 4 | 2022 | 1992 |
| Raymond | 4 | 2021 | 1994 |
| Ardenvoir | 3 | 1987 | 1968 |
| Connell | 3 | 2011 | 1971 |
| Leavenworth | 3 | 2023 | 1985 |
| Ewan | 3 | 2019 | 1985 |
| Curlew | 3 | 2017 | 1994 |
| Harwood | 3 | 1997 | 1994 |
| Hatton | 3 | 1994 | 1993 |
| Moses Coulee | 3 | 2023 | 1993 |
Common Nighthawk Population Trend in Other States
alabamaalaskaarizonaarkansascaliforniacoloradoconnecticutdelawarefloridageorgiaidahoillinoisindianaiowakansaskentuckylouisianamainemarylandmassachusettsmichiganminnesotamississippimissourimontananebraskanevadanew-hampshirenew-jerseynew-mexiconew-yorknorth-carolinanorth-dakotaohiooklahomaoregonpennsylvaniarhode-islandsouth-carolinasouth-dakotatennesseetexasutahvermontvirginiawest-virginiawisconsinwyoming
Source: USGS North American Breeding Bird Survey, retrieved 2026-05-22.