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Photo: JJ Harrison · CC BY-SA 3.0 (May be cropped or resized)
Myophonus castaneus
Range
Endemic to Sumatra
The brown-winged whistling thrush, also known as the Sumatran or chestnut-winged whistling thrush, is a whistling thrush endemic to Sumatra. In the past it has often been lumped together with the Javan and Bornean whistling thrushes (Wikipedia, general species account).