cettiid

Cettiidae is a family of passerine birds belonging to the order Passeriformes. The family was formerly often placed within the Old World warbler family Sylviidae, but has been recognized as a distinct family based on genetic and morphological studies. Cettiidae birds are small to medium-sized, insectivorous birds that are found in a variety of habitats across Africa, Asia, and Europe. They are characterized by their relatively long tails, short rounded wings, and strong legs.

The genus Cettia, which gives the family its name, is the most well-known and contains several species, including the Japanese bush warbler (Horornis diphone), formerly Cettia diphone. Other genera within the family include Abroscopus, Erythrocercus, Horornis, and Tickellia. These birds are typically shy and secretive, often inhabiting dense undergrowth, bushes, and reeds, which makes them challenging to observe.

Cettiidae birds generally build cup-shaped nests, often in low vegetation or on the ground, and lay clutches of typically 3-6 eggs. Their diet consists primarily of insects, spiders, and other small invertebrates, supplemented with berries and seeds, especially outside the breeding season. Their vocalizations are often complex and varied, with some species known for their melodious songs. The conservation status of species within Cettiidae varies, with some being widespread and common, while others face threats from habitat loss and degradation.