Palm Warbler
Setophaga palmarum
The palm warbler is a small songbird in the New World warbler family. Source
Where it is now
In the last 8 weeks this bird was recorded 115,212 times across 43 areas (each area is a 5 degree square).
See the Palm Warbler on the live map
Movement and weather
Each season it is first heard regularly where daytime highs are around 14°C (typically 9 to 22°C, from 25 areas). That range is wide, so temperature alone does not explain when it turns up.
Over the weeks it was present in the past year, its centre in North America ranged from 22°N in March to 49°N in September, about 3,000 km apart.
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 | 9 March 2026 | 5 October 2026 | 4 May 2026 | 25 |
Figures are effort corrected and come from automatic sound identification, which makes mistakes. How this is measured and how it compares with human observers.