Genus Branta is a taxonomic group in the family Anatidae, which contains species of geese commonly known as "black geese". Some common synonyms for Genus Branta include the generic terms "Brant geese" and "brent geese". Other synonyms include the specific species names such as Branta bernicla (brant goose), Branta canadensis (Canada goose), and Branta hutchinsii (hutchins's goose). These synonyms are often used interchangeably to refer to these birds in the scientific literature, and are useful for identifying different species of black geese within the genus. Overall, the synonyms for Genus Branta provide a useful reference point for studying and understanding the diversity of these important waterfowl.