It is one of the common names of a bird in Colombia. It is also known as black thy thy, black thy thy, parasitic chamon, morajú or blackbird. Other common names are mulatto , mariamulata , Josmary , chupín . Its scientific name is Molothrus bonariensis and belongs to the family Icteridae. It practices laying parasitism, so it lays its eggs in other people's nests and its young are fed by birds of other species.