Crested Screamer

Crested screamer (Southern screamer) Chauna torquata, is one of three species of screamers which live in tropical and sub-tropical South America: the Horned scr...
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Crested screamer (Southern screamer) Chauna torquata, is one of three species of screamers which live in tropical and sub-tropical South America: the Horned screamer or Anioema (Anhima cornuta), the Northern screamer (Chauna chavaria) and the Southern screamer (Chauna torquata). The Crested (Southern) Screamer species has a large range, with an estimated global Extent of Occurrence of 3,500,000 km². It has a large global population estimated to be 100,000-1,000,000 individuals.
The southern screamer is one of the largest birds of southern South America at 83 to 90 cm (33 to 35 in) long and weighing about 4.4 kg (9.7 lb). Their flat wing measures 50 to 57 cm (20 to 22 in), their tail 22 to 26 cm (8.7 to 10.2 in), and their culmen 4.0 to 5.4 cm (1.6 to 2.1 in).
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." Female's calls are somewhat weaker and higher pitched than males'. Screamers call both in flight and when perched, and the call can be heard of up to 3 km (2 mi).
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