The Screamers are large birds from South America looking a little like turkeys but have partially webbed feet, swim well and are distantly related to Australia's Magpie Goose (also has partially-webbed feet). Like Africa's Spur-winged Goose, they have spurs on their wings for fighting. They don't have the bill typical of geese/ducks. They can also fly well but don't migrate.
The Southern or Crested Screamer shown here (others are the Northern/Black-necked and the Horned) is from the central band of South America. It is about 3 feet tall.
Male and female have similar plumage, usually grey but can be brown. They can be domesticated and their loud screams (can be heard over 2 km away) used as intruder alarms.
Screamers are said to be the evolutionary link between geese/swans and pheasants/poultry.