Single notch of breast-bone about two-thirds the length of the entire breastbone. Fifth secondary quill present. This suborder contains two genera— Turnix, with three toes, found throughout the warmer parts of the Old World, including Australia, and Pedionomus, with rudimentary hind toe, peculiar to Australia. The females are larger and more handsomely coloured than the mates. Males generally incubate the eggs and tend the young, while the females fight among themselves for possession of the males. The young are hatched covered with down and able to run as soon as they leave the eggs.