The Order Tinamiformes is a group of flightless birds commonly known as tinamous. They are found in South and Central America and are characterized by their plump body and short bill. There are various synonyms for the Order Tinamiformes, including the Paleognathae, which refers to birds with a flat sternum instead of the keeled sternum found in flying birds. Another synonym for the Order Tinamiformes is the ratites, which includes several flightless birds such as ostriches and emus. This group is defined by their flat breastbones, absence of a keeled sternum and limited wing use. Despite their flightless nature, tinamous are known for their swift running abilities and diverse vocalizations.