Ochraceous Bulbul 
(Cành cạch bụng hung, Alophoixus ochraceus)

The ochraceous bulbul (Alophoixus ochraceus) is a species of songbird in the bulbul family, Pycnonotidae.

Difference between the puff-throated bulbul (Alophoixus pallidus) vs ochraceous bulbul (Alophoixus ochraceus): former is lighter and paler than latter; under body of the former is more yellowish than the latter.

The family name is from Greek: puknos "thick" or "compact" and -nōtos "-backed".
Alophoixus Greek: alophos crestless; genus Ixos: Greek mistletoe;
ochre, Ochraceous: brownish yellow, Latin from ōchra (“ochre”) +‎ -āceus, from Ancient Greek ὠχρός (ōkhrós, “wan”), from ὤχρα (ṓkhra, “yellow ochre”).