Seriema age of four to five months. It is unknown when fledged chicks reach sexual maturity. There are two living species of seriemas. The red-legged seriema, or crested cariama ("Cariama cristata") is found from eastern Brazil, to central Argentina. It is bigger and nests on the ground or in bushes or trees up to above the ground. The black-legged seriema ("Chunga burmeisteri") is found in northwest Argentina and Paraguay. It nests in trees. These birds are thought to be the closest living relatives of a group of gigantic (up to tall) carnivorous "terror birds", the phorusrhacids, which are known from fossils
Black-legged seriema foxes. Seriemas are very fierce, and they have been known to attack humans, especially when defending their young. Black-legged seriema The black-legged seriema ("Chunga burmeisteri") is one of two living species of seriemas in the family Cariamidae. It is found in Argentina, Bolivia, and Paraguay. Its natural habitats are subtropical or tropical dry forests and subtropical or tropical dry shrubland. The black-legged seriema is similar to its relative, the red-legged seriema, "Cariama cristata". However, the black-legged seriema is more arboreal than its cousin, and it prefers to spend more time in trees. They often live together in family groups, and