Species · BCR 34 · BBS 2025 Release · 1966–2024
Burrowing Owl In Sierra Madre Occidental
Burrowing Owl in Sierra Madre Occidental has collapsed: down 77% on the route-weighted index since 1974.
-77%Since 1974
7Routes In Region
30Years
Notable Signals
long arc declinecomputed index
Burrowing Owl has collapsed in Sierra Madre Occidental: down 77% on the route-weighted index since 1974.
Forecast
If the recent trend holds, Burrowing Owl in Sierra Madre Occidental is projected to fall about 100% by 2029 — from 0.17 in 2024 to a central estimate of 0.00 (95% range 0.00–0.43). A 5-year backtest shows a typical error of ±205%, with 100% of held-out values landing inside the 95% band.
-100%Change by 2029
0.00Projected 2029 index
0.00–0.4395% range
±205%Backtest error
| Year | Projected index | 95% low | 95% high |
|---|---|---|---|
| 2025 | 0.00 | 0.00 | 0.43 |
| 2026 | 0.00 | 0.00 | 0.43 |
| 2027 | 0.00 | 0.00 | 0.43 |
| 2028 | 0.00 | 0.00 | 0.43 |
| 2029 | 0.00 | 0.00 | 0.43 |
Routes In Sierra Madre Occidental
| Clay Spring | ARIZONA | 3 | 2024 |
| San Simon | ARIZONA | 1 | 2022 |
| Patagonia | ARIZONA | 1 | 1998 |
| Sunizona | ARIZONA | 1 | 1986 |
| Mcneal | ARIZONA | 1 | 2023 |
| Rucker | ARIZONA | 1 | 2007 |
| Vicks Peak | NEW-MEXICO | 1 | 1996 |
Source: USGS North American Breeding Bird Survey, retrieved 2026-05-22.