The Old World flycatchers are a large family, the Muscicapidae, of small passerine birds restricted to the Old World (Europe, Africa and Asia), with the exception of several vagrants and two species, bluethroat (Luscinia svecica) and northern wheatear (Oenanthe oenanthe), found also in North America. These are mainly small arboreal insectivores, many of which, as the name implies, take their prey on the wing. The family includes 352 species and is divided into 51 genera. The appearance of these birds is very varied, but they mostly have weak songs and harsh calls. They are small to medium birds, ranging from 9 to 22 cm in length. Many species are dull brown in colour, but the plumage of some can be much brighter, especially in the males. Most have broad, flattened bills suited to catching insects in flight, although the few ground-foraging species typically have finer bills. (Source: Wikipedia.org, CC BY-SA)