Species · Connecticut · BBS 2025 Release · 1966–2024
Great Horned Owl Population Trend in Connecticut
Great Horned Owl in Connecticut has risen sharply: up 61% on the route-weighted index since 1981.
Notable Great Horned Owl Trends in ConnecticutNotable signalsLong-arc shifts the engine flags automatically — sustained declines or increases large enough to stand out from year-to-year noise.Full methodology →
long arc increasecomputed indexTrend sourceWhether the figure is our own computed route-weighted index or an official USGS modeled estimate. The current build labels every trend as computed.Full methodology →
Great Horned Owl has risen sharply in Connecticut: up 61% on the route-weighted index since 1981.
Great Horned Owl Survey Routes in Connecticut
| Recent countThe raw number of individuals recorded on this route in its most recent survey year. A single-route tally, not a trend.Full methodology → | |||
|---|---|---|---|
| Woodstock | 2 | 1980 | 1980 |
| Westbrook | 2 | 1988 | 1988 |
| Warren | 2 | 2011 | 2010 |
| Mystic | 1 | 2023 | 2023 |
| Buckingham | 1 | 2005 | 1994 |
| Uncasville | 1 | 2011 | 2011 |
| Willimantic | 1 | 1997 | 1997 |
| No Woodbury | 1 | 2002 | 1981 |
| New Hartford | 1 | 2012 | 1995 |
| Greenwich | 1 | 1976 | 1976 |
| Long Hill | 1 | 2005 | 2005 |
| Mid Haddam | 1 | 1983 | 1983 |
| New Hartford | 1 | 1985 | 1985 |
| Granby | 1 | 1989 | 1989 |
Great Horned Owl Population Trend in Other States
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Source: USGS North American Breeding Bird Survey, retrieved 2026-05-22.