Where do Willow Warblers breeding in Western Siberia (*P. t. acredula*) typically spend their wintering period?
Answer
Central Africa
The specific wintering location in sub-Saharan Africa is correlated with the subspecies' breeding origin. The subspecies *P. t. acredula*, which originates from Northern Scandinavia and Western Siberia, is specifically noted as migrating to winter in Central Africa. This differs from *P. t. trochilus* (Western breeders) which favor West Africa, and *P. t. yakutensis* (Eastern Siberia) which travels furthest to Eastern and Southern Africa.
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