Spotted Crake

Porzana porzana

The spotted crake is a small waterbird of the family Rallidae. The scientific name is derived from Venetian terms for small rails. Source

Where it is now

In the last 8 weeks this bird was recorded 539,691 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 19°C (typically 9 to 28°C, from 30 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 Europe ranged from 44°N in December to 65°N in July, about 2,300 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.