Species · BCR 34 · BBS 2025 Release · 1966–2024
Plumbeous Vireo In Sierra Madre Occidental
Plumbeous Vireo in Sierra Madre Occidental has risen sharply: up 55% on the route-weighted index since 1970.
+55%Since 1970
27Routes In Region
55Years
Notable Signals
long arc increasecomputed index
Plumbeous Vireo has risen sharply in Sierra Madre Occidental: up 55% on the route-weighted index since 1970.
Forecast
If the recent trend holds, Plumbeous Vireo in Sierra Madre Occidental is projected to rise about 16% by 2029 — from 5.6 in 2024 to a central estimate of 6.5 (95% range 3.6–9.3). A 5-year backtest shows a typical error of ±16.3%, with 100% of held-out values landing inside the 95% band.
+16%Change by 2029
6.5Projected 2029 index
3.6–9.395% range
±16.3%Backtest error
| Year | Projected index | 95% low | 95% high |
|---|---|---|---|
| 2025 | 6.3 | 3.5 | 9.1 |
| 2026 | 6.3 | 3.5 | 9.2 |
| 2027 | 6.4 | 3.5 | 9.2 |
| 2028 | 6.4 | 3.6 | 9.3 |
| 2029 | 6.5 | 3.6 | 9.3 |
Routes In Sierra Madre Occidental
| Happy Jack | ARIZONA | 47 | 2024 |
| Reserve | NEW-MEXICO | 33 | 2023 |
| Pinetop | ARIZONA | 24 | 2022 |
| Sprucedale | ARIZONA | 21 | 2023 |
| Forest Lakes | ARIZONA | 18 | 2024 |
| Alpine | ARIZONA | 17 | 2023 |
| Flagstaff | ARIZONA | 15 | 2022 |
| Prescott | ARIZONA | 14 | 2022 |
| Tonto Vill. | ARIZONA | 11 | 2021 |
| Portal | ARIZONA | 11 | 2024 |
| Emory Pass | NEW-MEXICO | 11 | 2024 |
| Blue | ARIZONA | 10 | 1991 |
| Williams | ARIZONA | 10 | 2019 |
| Mt. Graham | ARIZONA | 7 | 2023 |
| Carr Mtn | ARIZONA | 7 | 2024 |
| Aztec Peak | ARIZONA | 6 | 1978 |
| Rucker | ARIZONA | 6 | 2009 |
| Vicks Peak | NEW-MEXICO | 5 | 2024 |
| Mormon Lake | ARIZONA | 3 | 1975 |
| Pomerene | ARIZONA | 3 | 2006 |
| Sunizona | ARIZONA | 2 | 1996 |
| Skull Valley | ARIZONA | 2 | 2022 |
| Patagonia | ARIZONA | 1 | 2019 |
| Maine | ARIZONA | 1 | 2021 |
| Sahuarita | ARIZONA | 1 | 2012 |
Source: USGS North American Breeding Bird Survey, retrieved 2026-05-22.