Bustards
Order: Gruiformes Family: Otididae
Bustards, including floricans and korhaans, are large terrestrial birds mainly associated with dry open country and steppes in the Old World. They make up the family Otididae (formerly known as Otidae). Bustards are all fairly large and two species, the Kori Bustard and the Great Bustards are frequently cited as the world's heaviest flying birds, since both may exceed 20 kg (44 lbs).
Great Bustard Otis tarda
Read more about this topic: List Of Non-passerine Birds Of Korea