Bridled Titmouse
Bridled Titmouse has risen sharply: up 64% on the route-weighted index since 1971.
About the Bridled Titmouse
The Bridled Titmouse (Baeolophus wollweberi) is a North American member of the Chickadees & Titmice (Paridae). In this analysis it is grouped with the forest birds.
- Size
- 4.5–6 in long (11–15 cm) — a tiny, active songbird (typical for the family)
- Habitat
- Woodlands and forest edges, including wooded suburbs and parks.
- Diet
- Insects and spiders gleaned from foliage and bark, with seeds and berries in season.
- Range
- Recorded on 22 Breeding Bird Survey routes across 2 states, most concentrated in the Sierra Madre Occidental.
- Family
- Paridae · Forest birds
Notable Bridled Titmouse Trends
No notable trend signals for Bridled Titmouse. See the full index history below.
Bridled Titmouse Population Forecast
If the recent trend holds, Bridled Titmouse is projected to stay roughly flat through 2029, near 0.02 (95% range 0.00–0.04). A 5-year backtest shows a typical error of ±74.6%, with 100% of held-out values landing inside the 95% band.
| Year | Projected index | 95% low | 95% high |
|---|---|---|---|
| 2025 | 0.02 | 0.00 | 0.04 |
| 2026 | 0.02 | 0.00 | 0.04 |
| 2027 | 0.02 | 0.00 | 0.04 |
| 2028 | 0.02 | 0.00 | 0.04 |
| 2029 | 0.02 | 0.00 | 0.04 |
Where the Bridled Titmouse Is Detected
BBS routes recording Bridled Titmouse, sized by most recent count.
Bridled Titmouse Population Trend by State
| Arizona | +24% | 1971 | 19 |
| New Mexico | -55% | 1999 | 3 |
Bridled Titmouse Population Trend by Region
Bird Conservation Regions are the ecological unit for trends.
| Sierra Madre Occidental | -31% | 1971 | 21 |
Bridled Titmouse Conservation Status
Our route-weighted index shows it up about 64% since 1971.
Source: USGS North American Breeding Bird Survey, retrieved 2026-05-22. Trend is a route-weighted relative-abundance index, not an absolute population.