The South American Cardinal is a species of bird found in the tropical and subtropical regions of South America. The scientific name for this species is Cardinalis cardinalis, and it is commonly referred to as the Red-crested Cardinal. This species is known for its bright red crest and its distinctive call. It is also known for its ability to adapt to different habitats, including urban areas. The term 'UNO' is a three-letter acronym for the Spanish word for one, which is often used to refer to the South American Cardinal.