Western Bluebird
Sialia mexicana
The western bluebird is a small North American thrush. Source
Where it is now
In the last 8 weeks this bird was recorded 178,307 times across 20 areas (each area is a 5 degree square).
See the Western Bluebird on the live map
Movement and weather
Each season it is first heard regularly where daytime highs are around 13°C (typically 10 to 17°C, from 10 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 | 12 January 2026 | 24 August 2026 | 6 April 2026 | 10 |
Figures are effort corrected and come from automatic sound identification, which makes mistakes. How this is measured and how it compares with human observers.