4-1-2016 HONG KONG - RED WHISKERED BULBUL (Pycnonotus jocosus)

The red-whiskered bulbul (Pycnonotus jocosus ), or crested bulbul, is a passerine bird native to Asia. It is a member of the bulbul family. It is a resident frugivore found mainly in tropical Asia. It has been introduced in many tropical areas of the world where populations have established themselves. It has a loud three or four note call, feeds on fruits and small insects and perches conspicuously on trees. It is common in hill forests and urban gardens.

The Red-whiskered bulbul is a frugivorous songbird native to Asia. It has brown upperparts and whitish underparts with buff flanks and a dark spur running onto the breast at shoulder level. It has a tall pointed black crest, red face patch, and thin black moustachial line. The tail of this bird is long and brown with white terminal feather tips, but the vent area is red. Juveniles lack the red patch behind the eye, and the vent area is rufous-orange.

Red-whiskered bulbuls are found in India, Nepal, Thailand, Myanmar, China, Bhutan, Bangladesh, Malaysia, Cambodia, Laos, and Viet Nam. These birds don’t migrate and prefer to live in lightly wooded areas, more open country with bushes and shrubs. They also occur in agricultural areas, suburbs, and urban areas.

When not nesting Red-whiskered bulbuls spend their days in flocks and roost communally in loose groups of a hundred or more birds. During the breeding period, they will defend territories of about 3,000 square meters (32,000 sq ft). Red-whiskered bulbuls are noisy birds. Their loud and evocative call is a sharp ‘kink-a-joo’ and the song is a scolding chatter. They are more often heard than seen, but will often perch conspicuously especially in the mornings when they call from the tops of trees.

Red-whiskered bulbuls are herbivores (frugivores, nectarivores) and carnivores (insectivores). They feed mainly on fruits including those of the yellow oleander that is toxic to mammals, berries, and nectar. Young birds feed on caterpillars and insects which are replaced by fruits and berries as they mature.

The breeding season of Red-whiskered bulbuls peaks from December to May in southern India and March to October in northern India. They may nest once or twice a year. During this time the males perform courtship display that involves head bowing, spreading the tail, and drooping wings. The nest of these birds is cup-shaped and is built on bushes, thatched walls, or small trees. It is woven of fine twigs, roots, and grasses, and embellished with large objects such as bark strips, paper, or plastic bags. Females usually lay 2 or 3 eggs that have a pale mauve ground color with speckles becoming blotches towards the broad end. Eggs take 12 days to hatch and both parents take part in raising their helpless chicks. The young typically fledge at about 14 to 18 days after hatching. Red-whiskered bulbuls have an interesting defensive behavior when they sense danger at the nest. Adults (possibly the female) may feign injury to distract potential predators away from the nest.