Chestnut-capped Warbler
Basileuterus delattrii

The chestnut-capped warbler is a species of bird in the family Parulidae, the New World warblers. It is found from Guatemala to Colombia and Venezuela. Source
Where it is now
In the last 8 weeks this bird was recorded 1,401 times across 7 areas (each area is a 5 degree square).
See the Chestnut-capped Warbler on the live map
Arrival dates
The week it was first heard regularly in each region, after at least six weeks away. Dates differ from south to north, so a region has a range.
| Region | First arrival | Last arrival | Typical peak | Areas |
|---|---|---|---|---|
| South America | 30 March 2026 | 15 June 2026 | 6 July 2026 | 3 |
Figures are effort corrected and come from automatic sound identification, which makes mistakes. How this is measured and how it compares with human observers.