Light-vented bulbul
also called the Chinese bulbul (Bông lau Trung Quốc, Pycnonotus sinensis)

The light-vented bulbul (Pycnonotus sinensis), also called the Chinese bulbul, is a species of bird in the bulbul family.
The bird is found in central and southern China, Hong Kong, Macao, northern Vietnam, southern Japan and Taiwan, with occasional records from South Korea. 

Pycnonotus, Pycnonotidae: from Greek puknos "thick" or "compact" and -nōtos "-backed" (noton: back).