Behaviour
All populations are highly migratory, with the subspecies P. t. yakutensis migrating up to 12,000 km from eastern Siberia to southern Africa along the Asian - East African Flyway, one of the longest migrations of any for a bird of its size. Approximate timings are:
- October to March: wintering in sub Saharan Africa.
- Mid March to mid May: migrates and arrives in the breeding range.
- Late April to August: breeding season, usually only one brood but rarely two.
- August to October: migrates back to Africa.
Read more about this topic: Willow Warbler
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