Greater Whitethroat

Curruca communis

The greater whitethroat or common whitethroat is a common and widespread Old World warbler which breeds throughout Europe and across much of temperate western Asia. This small passerine bird is strongly migratory, and winters in tropical Africa, Arabia, and Pakistan. Source

Where it is now

In the last 8 weeks this bird was recorded 5,897 times across 23 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 16°C (typically 14 to 19°C, from 24 areas). That holds across 20° of latitude, which suggests its timing follows temperature more than the calendar.

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.