Pygmy Cupwing, or pygmy wren-babbler
(Khướu đất đuôi cụt Pigmi, Pnoepyga pusilla)

Pnoepyga, Pnoepygidae: pnoe [Greek] πνοή (pnoē): wind, breath, breeze, soul; pyga: puge meaning "rump".
pusillus, pusilla: very little, very small, tiny

The pygmy cupwing or pygmy wren-babbler, is a species of bird in the Pnoepyga wren-babblers family, Pnoepygidae.