Black-whiskered Vireo
Black-whiskered Vireo has collapsed: down 88% on the route-weighted index since 1968.
About the Black-whiskered Vireo
The Black-whiskered Vireo (Vireo altiloquus) is a North American member of the Vireos (Vireonidae). In this analysis it is grouped with the forest birds.
- Size
- 4.5–6 in long (11–15 cm) — a small, deliberate 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 18 Breeding Bird Survey routes across 1 state, most concentrated in the Peninsular Florida.
- Family
- Vireonidae · Forest birds
Notable Black-whiskered Vireo Trends
No notable trend signals for Black-whiskered Vireo. See the full index history below.
Black-whiskered Vireo Population Forecast
If the recent trend holds, Black-whiskered Vireo is projected to stay roughly flat through 2029, near 0.01 (95% range 0.00–0.04). A 5-year backtest shows a typical error of ±1029.5%, with 100% of held-out values landing inside the 95% band.
| Year | Projected index | 95% low | 95% high |
|---|---|---|---|
| 2025 | 0.01 | 0.00 | 0.04 |
| 2026 | 0.01 | 0.00 | 0.04 |
| 2027 | 0.01 | 0.00 | 0.04 |
| 2028 | 0.01 | 0.00 | 0.04 |
| 2029 | 0.01 | 0.00 | 0.04 |
Where the Black-whiskered Vireo Is Detected
BBS routes recording Black-whiskered Vireo, sized by most recent count.
Black-whiskered Vireo Population Trend by State
| Florida | -83% | 1968 | 18 |
Black-whiskered Vireo Population Trend by Region
Bird Conservation Regions are the ecological unit for trends.
| Peninsular Florida | -85% | 1968 | 17 |
Black-whiskered Vireo Conservation Status
Our route-weighted index shows it down about 88% since 1968.
Source: USGS North American Breeding Bird Survey, retrieved 2026-05-22. Trend is a route-weighted relative-abundance index, not an absolute population.