Prothonotary Warbler
Protonotaria citrea

The prothonotary warbler is a small songbird of the New World warbler family. It is named for its plumage, which resembles the yellow robes once worn by papal clerks in the Roman Catholic Church. Source
Where it is now
In the last 8 weeks this bird was recorded 4,462 times across 20 areas (each area is a 5 degree square).
See the Prothonotary Warbler on the live map
Movement and weather
Each season it is first heard regularly where daytime highs are around 25°C (typically 21 to 28°C, from 15 areas).
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 | 23 March 2026 | 17 August 2026 | 25 May 2026 | 15 |
Figures are effort corrected and come from automatic sound identification, which makes mistakes. How this is measured and how it compares with human observers.