Penelope bird-genus, also known as guans, is a group of birds found mainly in Central and South America. When referring to synonyms for this specific bird-genus, the terms "guan birds" or simply "guans" can be used interchangeably. These synonyms are often utilized by ornithologists and bird enthusiasts to describe these unique, medium-sized birds that are known for their magnificent plumage and distinct vocalizations. With their striking appearance and diverse species within the Penelope bird-genus, adopting these synonyms helps to efficiently communicate and discuss this captivating group of avian creatures.