Rusty Blackbird

Euphagus carolinus

The rusty blackbird is a medium-sized New World blackbird, closely related to grackles. It is a bird that prefers wet forested areas, breeding in the boreal forest and muskeg across northern Canada, and migrating southeast to the United States during winter. Source

Where it is now

In the last 8 weeks this bird was recorded 30,886 times across 45 areas (each area is a 5 degree square).

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Movement and weather

Each season it is first heard regularly where daytime highs are around 10°C (typically 2 to 21°C, from 20 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 34°N in February to 57°N in August, about 2,500 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.

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Figures are effort corrected and come from automatic sound identification, which makes mistakes. How this is measured and how it compares with human observers.