Species · Massachusetts · BBS 2025 Release · 1966–2024
Great Horned Owl Population Trend in Massachusetts
Great Horned Owl in Massachusetts has increased: up 32% on the route-weighted index since 1991.
+32%Since 1991
11Routes In State
14Years
Notable Great Horned Owl Trends in Massachusetts
No notable trend signals for Great Horned Owl in Massachusetts. See the full index history below.
Great Horned Owl Survey Routes in Massachusetts
| E Dennis | 2 | 1991 | 1991 |
| Belchertown | 2 | 2024 | 2022 |
| Wellfleet | 1 | 1991 | 1971 |
| Maynard | 1 | 2021 | 2021 |
| Wellfleet 2 | 1 | 2024 | 2024 |
| Mansfield | 1 | 1992 | 1992 |
| Warren | 1 | 1999 | 1987 |
| S Barre | 1 | 2023 | 2018 |
| Cummington | 1 | 1991 | 1991 |
| Chesterfield | 1 | 2006 | 2006 |
| Warren 2 | 1 | 2024 | 2011 |
Great Horned Owl Population Trend in Other States
alabamaalaskaarizonaarkansascaliforniacoloradoconnecticutdelawarefloridageorgiaidahoillinoisindianaiowakansaskentuckylouisianamainemarylandmichiganminnesotamississippimissourimontananebraskanevadanew-hampshirenew-jerseynew-mexiconew-yorknorth-carolinanorth-dakotaohiooklahomaoregonpennsylvaniarhode-islandsouth-carolinasouth-dakotatennesseetexasutahvermontvirginiawashingtonwest-virginiawisconsinwyoming
Source: USGS North American Breeding Bird Survey, retrieved 2026-05-22.