The southern screamer (Chauna torquata) is a species of bird in family Anhimidae of the waterfowl order Anseriformes.

The front of their neck, their breast, and their sides are pale gray faintly mottled and streaked with white.

[4] The southern screamer is found from the eastern half of Bolivia south into Argentina as far as Buenos Aires Province and east through Paraguay into southwestern Brazil and Uruguay.

It inhabits tropical and subtropical wetlands, including lakes, marshes, and flooded meadows with scattered trees.

However, seasonal changes in the numbers present in coastal and inland parts of Brazil's Rio Grande do Sul suggest local movements between them.

[4] The southern screamer feeds on the leaves, stems, and seeds of aquatic plants and also on some crops.

The southern screamer's "loud, unmelodious, double-noted trumpet call" has been further described as "a low, throaty, almost barking, brief oh-WOOOW which also sounds sometimes as be-SERK."

Southern screamers are sometimes domesticated and are very good guard animals because of their loud, far-carrying, call.