Genus Chalcostigma is a group of birds that belongs to the family of hummingbirds. They are commonly found in the Andes mountain range and are known for their colorful plumage and striking appearance. Synonyms for the Genus Chalcostigma include the Andean hillstar, Andean metal-tail, and Andean sunangel. These birds typically have metallic green or copper feathers, which shine brilliantly in the sunlight and make them a favorite among bird watchers and photographers. Some other notable features of the Genus Chalcostigma include their long bills, which help them to feed on nectar from flowers, and their ability to hover in mid-air for extended periods of time.