The Southern Screamer is found in southeastern Peru, northern Bolivia, Paraguay, southern Brazil, Uruguay and northern Argentina. Its diet consists of plants stems, seeds, leaves, and, rarely, small animals.
The Southern Screamer averages 40 in long and weighs 5 kg. They are the heaviest, although not necessarily the longest, of the three screamers. The wingspan is around 67 in. It lives in tropical and sub-tropical swamps, estuaries and watersides.