Largest organisms were related to the ostrich. They exceeded in height and . The last of the elephant birds became extinct about 300 years ago. Of almost exactly the same upper proportions as the largest elephant birds was "Dromornis stirtoni" of Australia, part of a 26,000-year-old group called mihirungs of the family Dromornithidae. The largest carnivorous bird was "Brontornis", an extinct flightless bird from South America which reached a weight of and a height of about . The tallest carnivorous bird was "Kelenken", which could reach 3 to 3.2 meters in height and 220 to 250 kilograms. The tallest bird ever was
Sri Lanka spurfowl species of bird in the genus "Galloperdix". It is a ground nesting bird, which lays 2-5 eggs in a scrape. Sri Lanka spurfowl is ~ 37 cm long bird. Both sexes have brown upperparts, wings and tail. The males exhibit vivid crimson red legs and bare facial skin and striking black and white dorsal plumage that extends to its head. There is also extensive white ocellation on the sepia wings and upperback. The legs of both sexes have multiple metatarsal spurs, which give rise to the specific name. The female has chestnut underparts and a plain brown back and wings.