Lesser Greenlet
Pachysylvia decurtata

The lesser greenlet is a small passerine bird in the family Vireonidae, the vireos, greenlets, and shrike-babblers. It is found in Mexico, every Central American country, Colombia, Ecuador, and Peru. Source
Where it is now
In the last 8 weeks this bird was recorded 1,303 times across 5 areas (each area is a 5 degree square).
See the Lesser Greenlet 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 |
|---|---|---|---|---|
| North America | 2 March 2026 | 8 June 2026 | 23 March 2026 | 2 |
| South America | 2 March 2026 | 14 September 2026 | 22 June 2026 | 2 |
Figures are effort corrected and come from automatic sound identification, which makes mistakes. How this is measured and how it compares with human observers.