Species · BCR 4 · BBS 2025 Release · 1966–2024
Northern Hawk Owl In BCR 4
Northern Hawk Owl in BCR 4 has fallen sharply: down 60% on the route-weighted index since 1992.
-60%Since 1992
28Routes In Region
30Years
Notable Signals
long arc declinecomputed index
Northern Hawk Owl has fallen sharply in BCR 4: down 60% on the route-weighted index since 1992.
Forecast
If the recent trend holds, Northern Hawk Owl in BCR 4 is projected to rise about 20% by 2029 — from 0.06 in 2024 to a central estimate of 0.07 (95% range 0.00–0.17). A 5-year backtest shows a typical error of ±141.4%, with 100% of held-out values landing inside the 95% band.
+20%Change by 2029
0.07Projected 2029 index
0.00–0.1795% range
±141.4%Backtest error
| Year | Projected index | 95% low | 95% high |
|---|---|---|---|
| 2025 | 0.07 | 0.00 | 0.17 |
| 2026 | 0.07 | 0.00 | 0.17 |
| 2027 | 0.07 | 0.00 | 0.17 |
| 2028 | 0.07 | 0.00 | 0.17 |
| 2029 | 0.07 | 0.00 | 0.17 |
Routes In BCR 4
| Savage | ALASKA | 3 | 2018 |
| Circle | ALASKA | 2 | 2021 |
| Maclaren | ALASKA | 2 | 1997 |
| Caribou Mtn. | ALASKA | 2 | 2001 |
| Kanuti Lake | ALASKA | 2 | 2021 |
| Birch Lake | ALASKA | 1 | 2001 |
| Tower Bluffs | ALASKA | 1 | 2014 |
| Cantwell | ALASKA | 1 | 2000 |
| L Salcha | ALASKA | 1 | 1982 |
| Kenny Lake | ALASKA | 1 | 1998 |
| Bear Creek | ALASKA | 1 | 1991 |
| Chicken | ALASKA | 1 | 2024 |
| Chena Hot Spring 2 | ALASKA | 1 | 2005 |
| Lake Louise | ALASKA | 1 | 2000 |
| Nicholai Sl | ALASKA | 1 | 2016 |
| Petersville | ALASKA | 1 | 1996 |
| Coldfoot | ALASKA | 1 | 2023 |
| Hather Creek | ALASKA | 1 | 2019 |
| Kanuti Canyn | ALASKA | 1 | 2008 |
| Manley Ht Sp | ALASKA | 1 | 2014 |
| Moose Creek | ALASKA | 1 | 2015 |
| Mt. Fairplay | ALASKA | 1 | 2015 |
| Mud River | ALASKA | 1 | 2024 |
| Ruby | ALASKA | 1 | 2021 |
| Ft. Richrdsn | ALASKA | 1 | 2001 |
Source: USGS North American Breeding Bird Survey, retrieved 2026-05-22.