Camellias in Hangzhou Botanical Garden are in full bloom these days, attracting the pollen-loving mountain bulbuls to come to suck honey. The green-winged birds are seen hovering, hanging upside down, or standing in the garden.

Mountain bulbul is 20-26 cm long middle-sized songbird species in the bulbul family. It is olive-green overall, with lighter buffy underparts and a streaky gray throat. It has a crested head and a pale throat. Large flocks are loud and easily detected as they fly overhead, giving sharp, repetitive, and echoing calls.

It tends to be found in the upper reaches of forested hills and mountains. It is found from the Indian subcontinent and southern China through Indochina to the Malay Peninsula. Its natural habitat is broadleaved evergreen forests between 800m and 2590m above sea level.