The "dark-faced ground-tyrant" is a small bird that is native to the Andean regions of South America. This bird is known for its distinctive dark mask-like markings on its face. There are several synonyms for this bird, including the Inca ground-tyrant, the black-faced ground-tyrant, and the Andean ground-tyrant. These names all refer to the same species of bird, and they are used interchangeably by bird enthusiasts and ornithologists. Despite its small size, the dark-faced ground-tyrant is an important species in its ecosystem, as it helps to control insect populations and serves as prey for larger birds and mammals.