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
Jurong Bird Park to the public. Jurong Bird Park is now a world-famous bird zoo where there are specimens of magnificent bird life from around the world, including a large flock of flamingos. It is currently the world's largest bird park in terms of the number of birds, and second largest both in the number of bird species and land area (after Germany's Weltvogelpark Walsrode). There are 5,000 birds of 400 species in Jurong Bird Park, of which 29 are of threatened species. In 2006, Jurong Bird Park completed a S$10 million makeover. As a result of the upgrade, the park got a