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3. Deignan, H. G. (1964). "Subfamily Timaliinae." In Check-list of birds of the world, edited by E. Mayr and Jr R. A. Paynter, 240-420. Cambridge, MA: Mus. Comp. Zool.
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5. 269. Notes on the vocalizations of Black-capped Babbler (Pellorneum capistratum)