Yellow Tyrannulet
Capsiempis flaveola
The yellow tyrannulet is a small passerine bird in subfamily Elaeniinae of family Tyrannidae, the tyrant flycatchers. It is found in Costa Rica, Nicaragua, Panama, and in every mainland South American country except Chile and Uruguay. Source
Where it is now
In the last 8 weeks this bird was recorded 125 times across 8 areas (each area is a 5 degree square).
See the Yellow Tyrannulet 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 | 30 March 2026 | 22 June 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.