Cettia

Cettia is a genus of small passerine birds in the family Cettiidae, which is native to the Old World tropics. The genus was introduced by the English ornithologist William John Swainson in 1837. The name Cettia is derived from the Greek word "kettos," meaning "small bird." The genus includes 13 species, which are commonly known as bush warblers or cettias.

Cettias are small birds, typically ranging from 10 to 13 centimeters in length. They have a slender body, short tail, and a distinctive song. The plumage is usually dull brown or gray, with some species exhibiting subtle patterns or streaks. Their diet primarily consists of insects, which they forage for in the foliage of trees and shrubs.

Cettias are found in a variety of habitats, including forests, scrublands, and gardens. They are known for their ability to climb and perch on branches, often seen moving through the foliage in a characteristic manner. The genus is particularly well-represented in Southeast Asia, with several species endemic to the region.

The breeding biology of cettias is not well-documented, but it is believed that they are monogamous and build cup-shaped nests in trees. The female lays a clutch of 2-3 eggs, which are incubated by both parents. The chicks are fed by both parents and fledge after about 10-12 days.

Cettias are generally considered to be of least concern by the International Union for Conservation of Nature (IUCN), as they have a wide distribution and adaptable habitats. However, some species may be threatened by habitat loss and degradation. Conservation efforts are focused on protecting their natural habitats and monitoring population trends.