The red-whiskered bulbul (Pycnonotus jocosus), or crested bulbul, is a passerine bird found in 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 feeds on fruits and small insects. Red-whiskered bulbuls perch conspicuously on trees and have a loud three or four note call. They are very common in hill forests and urban gardens within its range.
The red-whiskered bulbul was originally described with the shrikes within the genus Lanius in 1758 by Carl Linnaeus in his Systema Naturae. Hybrids have been noted in captivity with the red-vented, white-eared, white-spectacled, black-capped and Himalayan bulbuls. Leucism has also been recorded.
The red-whiskered bulbul is about 20 centimetres (7.9 in) in length. It has brown upper-parts 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 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.
The loud and evocative call is a sharp kink-a-joo (also transcribed as pettigrewor kick-pettigrew or pleased to meet you) and the song is a scolding chatter. It is more often heard than seen, but will often perch conspicuously especially in the mornings when they call from the tops of trees. The life span is about 11 years.
It has established itself in Australia and in Los Angeles, Hawaii, and Florida in the United States, as well as in Mauritius, on Assumption Island and Mascarene Islands. In Florida, it is only found in a small area, and its population could be extirpated easily. It was eradicated from Assumption Island in 2013–2015 to prevent colonisation of nearby Aldabra, the largest introduced bird-free tropical island.
The breeding season is spread out and peaks from December to May in southern India and March to October in northern India. Breeding may occur once or twice a year. The courtship display of the male involves head bowing, spreading the tail and drooping wings. The nest 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. The red-whiskered bulbul feeds on fruits (including those of the yellow oleander that are toxic to mammals), nectar and insects.[28]