Dunlin

Calidris alpina

The dunlin is a small wader in the genus Calidris. The English name is a dialect form of "dunling", first recorded in 1531–1532. It derives from dun, "dull brown", with the suffix -ling, meaning a person or thing with the given quality. Source

Where it is now

In the last 8 weeks this bird was recorded 173,133 times across 111 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 22°C (typically 18 to 26°C, from 40 areas).

Over the weeks it was present in the past year, its centre in North America ranged from 31°N in February to 56°N in July, about 2,800 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.