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
What Is a Nation? and continues to be invoked. Political historian Karl Deutsch, in a quote sometimes mistakenly attributed to Renan, said that a nation is "a group of people united by a mistaken view about the past and a hatred of their neighbours". Benedict Anderson's 1983 work Imagined Communities, which states that a nation is an "imagined political community", argues that Renan contradicts himself when he says French people must have forgotten the St. Bartholomew's Day massacre, yet does not explain what it is. In other words, Renan assumes that all his readers will remember the very massacre he says they have forgotten.