Ryan Photographic - Anhimidae - Screamers
This family is restricted to South America where there are three species. They are apparently most closely related to the Magpie Goose. They are unusual in that the males possess a penis. Despite their large size they are rarely hunted because of unpalatable flesh.
Chauna torquata Crested Screamer
Chauna torquata Crested Screamer, Fort Worth Zoo-9158
Chauna torquata Crested screamer captive FWZ-8147
Crested screamer, Fort Worth Zoo-1593