Wood Duck

Aix sponsa

The wood duck or Carolina duck is a partially migratory species of perching duck found in North America. The male is one of the most colorful North American waterfowls. Source

Where it is now

In the last 8 weeks this bird was recorded 118,600 times across 60 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 8°C (typically 1 to 16°C, from 32 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 32°N in January to 46°N in September, about 1,600 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.