Seriema found on fairly dry open country, the red-legged seriema preferring grasslands and the black-legged seriema preferring scrub and open woodland. They give loud, yelping calls and are often heard before they are seen. They have sharp claws, with an extensible and very curved second toe claw. Ecologically, the seriema is the South American counterpart of the African secretary bird. They feed on insects, snakes, lizards, frogs, young birds, and rodents, with small amounts of plant food (including maize and beans). They often associate with grazing livestock, probably to take insects the animals disturb. When seriemas catch small reptiles, they beat
Black-legged seriema as lizards and snakes. They supplement this diet with some plant material, too. They have a large, curved, and hyperextensible claw on the second digit of each hind foot. This claw resembles that of the ancient troodontidae dinosaurs, such as "Stenonychosaurus". If a piece of food is too large to be swallowed whole, the seriema will cut it apart with the sickle-claw. This claw is also used to kill prey, and climb trees. Farmers in South America often capture young seriemas from the wild, and tame them. They are then trained to guard the farm against potential predators, such as