Bay Wren
Cantorchilus nigricapillus
The bay wren is a species of bird in the family Troglodytidae. It is native to southern Central America and northwestern South America. Source
Where it is now
In the last 8 weeks this bird was recorded 2,018 times across 4 areas (each area is a 5 degree square).
See the Bay Wren 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 | 14 September 2026 | 14 September 2026 | 12 October 2026 | 1 |
Figures are effort corrected and come from automatic sound identification, which makes mistakes. How this is measured and how it compares with human observers.