Regulus Calendula is a Latin name for a species of birds known as the Yellow-crowned Night Heron. This bird is found across the Americas, from the southeastern United States to parts of South America. The Regulus Calendula is also known by other names, such as the American Night Heron, Bermuda Night Heron, and Cuba Night Heron. These synonyms reflect the bird's different habitats, geographical locations, and physical characteristics. Despite their different names, all these birds share the same traits of being nocturnal, secretive, and wading birds that feed on fish, crustaceans, and other aquatic prey.