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Photo: Лариса Артемьева (iNaturalist) · CC0
Malacopteron magnirostre
Range
Sundaland: southern Myanmar and Thailand through Peninsular Malaysia and Sumatra; a subspecies endemic to Borneo
The moustached babbler, also known as the brown-headed babbler or brown-headed tree-babbler, is a ground-babbler found in Sundaland. The nominate race is found in southern Myanmar and Thailand through Peninsular Malaysia and Sumatra (Wikipedia, general species account).