Order: PasseriformesFamily: Cisticolidae  The Cisticolidae are warblers found mainly in warmer southern regions of the Old World. They are generally very small birds of drab brown or grey appearance found in open country such as grassland or scrub. Order: PasseriformesFamily: Acrocephalidae  The members of this family are usually rather large for "warblers". Most are rather plain olivaceous brown above with much yellow to beige below. They are usually found in open woodland, reedbeds, or tall grass. The family occurs mostly in southern to western Eurasia and surroundings, but it also ranges far into the Pacific, with some species in Africa. Order: PasseriformesFamily: Locustellidae  Locustellidae are a family of small insectivorous songbirds found mainly in Eurasia, Africa, and the Australian region. They are smallish birds with tails that are usually long and pointed, and tend to be drab brownish or buffy all over. Order: PasseriformesFamily: Hirundinidae  The family Hirundinidae is adapted to aerial feeding. They have a slender streamlined body, long pointed wings and a short bill with a wide gape. The feet are adapted to perching rather than walking, and the front toes are partially joined at the base. Order: PasseriformesFamily: Pycnonotidae  Bulbuls are medium-sized songbirds. Some are colourful with yellow, red or orange vents, cheeks, throats or supercilia, but most are drab, with uniform olive-brown to black plumage. Some species have distinct crests. Order: PasseriformesFamily: Phylloscopidae  Leaf warblers are a family of small insectivorous birds found mostly in Eurasia and ranging into Wallacea and Africa. The species are of various sizes, often green-plumaged above and yellow below, or more subdued with grayish-green to grayish-brown colors. Order: PasseriformesFamily: Scotocercidae  The members of this family are found throughout Africa, Asia, and Polynesia. Their taxonomy is in flux, and some authorities place genus "Erythrocerus" in another family. Order: PasseriformesFamily: Sylviidae  The family Sylviidae is a group of small insectivorous passerine birds. They mainly occur as breeding species, as the common name implies, in Europe, Asia and, to a lesser extent, Africa.