Order: OtidiformesFamily: Otididae Bustards are large terrestrial birds mainly associated with dry open country and steppes in the Old World. They are omnivorous and nest on the ground. They walk steadily on strong legs and big toes, pecking for food as they go. They have long broad wings with "fingered" wingtips and striking patterns in flight. Many have interesting mating displays. Cuckoos Order: CuculiformesFamily: Cuculidae The family Cuculidae includes cuckoos, roadrunners and anis. These birds are of variable size with slender bodies, long tails and strong legs. The Old World cuckoos are brood parasites. Nightjars and allies Order: CaprimulgiformesFamily: Caprimulgidae Nightjars are medium-sized nocturnal birds that usually nest on the ground. They have long wings, short legs and very short bills. Most have small feet, of little use for walking, and long pointed wings. Their soft plumage is camouflaged to resemble bark or leaves. Swifts Order: CaprimulgiformesFamily: Apodidae Swifts are small birds which spend the majority of their lives flying. These birds have very short legs and never settle voluntarily on the ground, perching instead only on vertical surfaces. Many swifts have long swept-back wings which resemble a crescent or boomerang. Rails, gallinules, and coots Order: GruiformesFamily: Rallidae Rallidae is a large family of small to medium-sized birds which includes the rails, crakes, coots and gallinules. Typically they inhabit dense vegetation in damp environments near lakes, swamps or rivers. In general they are shy and secretive birds, making them difficult to observe. Most species have strong legs and long toes which are well adapted to soft uneven surfaces. They tend to have short, rounded wings and to be weak fliers. Cranes Order: GruiformesFamily: Gruidae Cranes are large, long-legged and long-necked birds. Unlike the similar-looking but unrelated herons, cranes fly with necks outstretched, not pulled back. Most have elaborate and noisy courting displays or "dances". Thick-knees Order: CharadriiformesFamily: Burhinidae The thick-knees are a group of largely tropical waders in the family Burhinidae. They are found worldwide within the tropical zone, with some species also breeding in temperate Europe and Australia. They are medium to large waders with strong black or yellow-black bills, large yellow eyes and cryptic plumage. Despite being classed as waders, most species have a preference for arid or semi-arid habitats. Stilts and avocets Order: CharadriiformesFamily: Recurvirostridae Recurvirostridae is a family of large wading birds, which includes the avocets and stilts. The avocets have long legs and long up-curved