Species · Maine · BBS 2025 Release · 1966–2024
Common Nighthawk Population Trend in Maine
Common Nighthawk in Maine has fallen sharply: down 54% on the route-weighted index since 1973.
-54%Since 1973
33Routes In State
33Years
Notable Common Nighthawk Trends in Maine
long arc declinecomputed index
Common Nighthawk has fallen sharply in Maine: down 54% on the route-weighted index since 1973.
Common Nighthawk Population Forecast in Maine
If the recent trend holds, Common Nighthawk in Maine is projected to fall about 95% by 2028 — from 0.13 in 2023 to a central estimate of 0.01 (95% range 0.00–0.24). A 5-year backtest shows a typical error of ±171%, with 60% of held-out values landing inside the 95% band.
-95%Change by 2028
0.01Projected 2028 index
0.00–0.2495% range
±171%Backtest error
| Year | Projected index | 95% low | 95% high |
|---|---|---|---|
| 2024 | 0.02 | 0.00 | 0.26 |
| 2025 | 0.02 | 0.00 | 0.25 |
| 2026 | 0.01 | 0.00 | 0.25 |
| 2027 | 0.01 | 0.00 | 0.24 |
| 2028 | 0.01 | 0.00 | 0.24 |
Common Nighthawk Survey Routes in Maine
| Topsfield | 6 | 1992 | 1990 |
| Deblois | 4 | 1973 | 1966 |
| Hartford | 3 | 1981 | 1981 |
| Grnd Lk Strm | 3 | 1992 | 1992 |
| Hudson | 2 | 1978 | 1978 |
| Horse Mtn | 2 | 1985 | 1985 |
| Searsport | 2 | 2022 | 2010 |
| Northfield 2 | 1 | 2017 | 2014 |
| Biddeford | 1 | 1994 | 1992 |
| Kittery Pt | 1 | 2023 | 1972 |
| Newcastle | 1 | 1975 | 1975 |
| Bethel | 1 | 2003 | 2003 |
| Greenwood | 1 | 1972 | 1972 |
| Bowdoin Ctr | 1 | 1975 | 1975 |
| Manchester | 1 | 1981 | 1981 |
| Harmony | 1 | 2022 | 1983 |
| Heron Lake | 1 | 1997 | 1985 |
| Eastbrook | 1 | 2023 | 1973 |
| Hancock | 1 | 1999 | 1972 |
| Aurora | 1 | 1982 | 1982 |
| Cooper | 1 | 2019 | 1975 |
| Northfield | 1 | 1980 | 1980 |
| Charleston | 1 | 2019 | 1994 |
| Greenville | 1 | 1972 | 1972 |
| Winn | 1 | 1979 | 1979 |
Common Nighthawk Population Trend in Other States
alabamaalaskaarizonaarkansascaliforniacoloradoconnecticutdelawarefloridageorgiaidahoillinoisindianaiowakansaskentuckylouisianamarylandmassachusettsmichiganminnesotamississippimissourimontananebraskanevadanew-hampshirenew-jerseynew-mexiconew-yorknorth-carolinanorth-dakotaohiooklahomaoregonpennsylvaniarhode-islandsouth-carolinasouth-dakotatennesseetexasutahvermontvirginiawashingtonwest-virginiawisconsinwyoming
Source: USGS North American Breeding Bird Survey, retrieved 2026-05-22.