Species · Maine · BBS 2025 Release · 1966–2024
Downy Woodpecker Population Trend in Maine
Downy Woodpecker in Maine has surged: up 126% on the route-weighted index since 1968.
+126%Since 1968
75Routes In State
58Years
Notable Downy Woodpecker Trends in Maine
long arc increasecomputed index
Downy Woodpecker has surged in Maine: up 126% on the route-weighted index since 1968.
Downy Woodpecker Population Forecast in Maine
If the recent trend holds, Downy Woodpecker in Maine is projected to rise about 14% by 2029 — from 1.7 in 2024 to a central estimate of 1.9 (95% range 1.2–2.7). A 5-year backtest shows a typical error of ±16.3%, with 80% of held-out values landing inside the 95% band.
+14%Change by 2029
1.9Projected 2029 index
1.2–2.795% range
±16.3%Backtest error
| Year | Projected index | 95% low | 95% high |
|---|---|---|---|
| 2025 | 1.9 | 1.1 | 2.6 |
| 2026 | 1.9 | 1.1 | 2.6 |
| 2027 | 1.9 | 1.1 | 2.6 |
| 2028 | 1.9 | 1.1 | 2.7 |
| 2029 | 1.9 | 1.2 | 2.7 |
Downy Woodpecker Survey Routes in Maine
| Bowdoin Ctr | 8 | 2021 | 1971 |
| Turner | 6 | 2010 | 1973 |
| Greenville | 6 | 2022 | 1972 |
| Seboomook Lk | 5 | 2014 | 1972 |
| Benedicta | 5 | 2022 | 1976 |
| Nesowadnehun | 5 | 2021 | 1990 |
| Westbrook | 4 | 2024 | 1977 |
| Carrying Pl | 4 | 2024 | 1980 |
| Cambridge | 4 | 2013 | 1967 |
| Waite | 4 | 1977 | 1977 |
| Baker Lake 2 | 4 | 2011 | 2011 |
| Hartford | 3 | 2024 | 1975 |
| East Troy | 3 | 2019 | 1977 |
| Harmony | 3 | 2024 | 1967 |
| Hermon | 3 | 2019 | 1966 |
| Hancock | 3 | 2024 | 1969 |
| Aurora | 3 | 2018 | 1979 |
| Northfield | 3 | 1981 | 1976 |
| Baxter | 3 | 1988 | 1982 |
| Winn | 3 | 2022 | 1979 |
| St David | 3 | 2004 | 1989 |
| Priestly Br. | 3 | 2013 | 1995 |
| Topsfield | 3 | 1996 | 1978 |
| Heron Lake | 3 | 2003 | 1983 |
| Cornville | 3 | 2024 | 2019 |
Downy Woodpecker 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.