Gray-bellied Spinetail
Synallaxis cinerascens
The grey-bellied spinetail is a species of bird in the Furnariinae subfamily of the ovenbird family Furnariidae. It is found in Argentina, Brazil, Paraguay, and Uruguay. Source
Where it is now
In the last 8 weeks this bird was recorded 5 times across 2 areas (each area is a 5 degree square).
See the Gray-bellied Spinetail 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 | 26 January 2026 | 26 January 2026 | 2 February 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.