Little Bittern

Ixobrychus minutus

The little bittern is a wading bird in the heron family, Ardeidae. This species was formerly placed in the genus Ixobrychus. Source

Where it is now

In the last 8 weeks this bird was recorded 33,544 times across 55 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 25°C (typically 22 to 29°C, from 24 areas).

Over the weeks it was present in the past year, its centre in Europe ranged from 43°N in March to 52°N in December, about 1,000 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.