The Light-vented Bulbul (also Chinese Bulbul), Pycnonotus sinensis, is a bird and a member of the bulbul family.
The particular characteristic is the large white patch covering the nape and the sides of its black head. It also sings very brightly and variably with a 'cha-ko-lee...cha-ko-lee...' sound.
They are common in East Asia. The population can be found in Hong Kong, mainland China, Taiwan, Korea and Japan.
The birds of Taiwan are of an endemic subspecies.