Species · Alaska · BBS 2025 Release · 1966–2024
Boreal Owl Population Trend in Alaska
Boreal Owl in Alaska has fallen sharply: down 72% on the route-weighted index since 1993.
Notable Boreal Owl Trends in AlaskaNotable 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 declinecomputed 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 →
Boreal Owl has fallen sharply in Alaska: down 72% on the route-weighted index since 1993.
Boreal Owl Survey Routes in Alaska
| 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 → | |||
|---|---|---|---|
| Circle | 1 | 2010 | 2010 |
| Birch Lake | 1 | 2022 | 2022 |
| Mud River | 1 | 2007 | 2007 |
| Tatalina | 1 | 2002 | 2002 |
| Ruby | 1 | 2014 | 2014 |
| Tower Bluffs | 1 | 2023 | 2023 |
| Chena Hot Sp | 1 | 1985 | 1985 |
| Delta | 1 | 2002 | 2002 |
| Galena (Short) | 1 | 2005 | 1993 |
| Kenny Lake | 1 | 2002 | 2002 |
| Dillingham | 1 | 2003 | 1999 |
| Sourdough | 1 | 2002 | 2002 |
| Swan Lake Rd | 1 | 1994 | 1992 |
| Dietrich Cmp | 1 | 2021 | 2021 |
| Seven Lakes | 1 | 1993 | 1993 |
Boreal Owl Population Trend in Other States
Source: USGS North American Breeding Bird Survey, retrieved 2026-05-22.