An introduced herb or small shrub native to the South and tropical Africa. Cultivated, escaped and naturalized mainly in the hill country (Below Hakgala on the way to the former Fort Macdonald ). Flowering throughout the year.
Rather common butterfly flies all the year round, mainly in the dry zone scrub jungles, forests and waste places. It also occurs in the intermediate zone. Its numbers increase with the northeast monsoons. Males sometimes settle on wet patches on the roads and river beds. It is a migratory species and larva feeds on Capparis sepiaria, Capparis grandis and probably on Capparis divaricata.
Rather common breeding resident occurs from lowlands to mid hills (Up to 1000 m elevations) mainly in the dry zone, while scarce from wet lowlands to hills. It prefers open country with tress and often encounters as pairs or several pairs together. It makes a nest, a small cup made out of of barks. mosses and lichens glued to a branch and parents takes it in turns to incubate (See above male bird on the left) Breeding season lasts from March to May and sometimes from July to August. Crested Treeswift feeds mainly on small flying insects.