Red-flanked Bluetail

Tarsiger cyanurus

The red-flanked bluetail, also known as the orange-flanked bush-robin, is a small passerine bird in the Old World flycatcher family. It breeds in mixed coniferous forests in northern Asia, parts of central Asia, and northeastern Europe. It is migratory, wintering mainly in southeast Asia, in the Indian subcontinent, the Himalayas, Taiwan, and northern Indochina. Source

Where it is now

In the last 8 weeks this bird was recorded 632 times across 15 areas (each area is a 5 degree square).

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Movement and weather

Over the weeks it was present in the past year, its centre in Asia ranged from 33°N in March to 43°N in September, about 1,100 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.