Half-collared Sparrow
Arremon semitorquatus
The half-collared sparrow is a species of bird in the family Passerellidae, the New World sparrows. It is endemic to Brazil. Source
Where it is now
In the last 8 weeks this bird was recorded 239 times across 4 areas (each area is a 5 degree square).
See the Half-collared Sparrow 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 | 23 March 2026 | 23 March 2026 | 13 April 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.