Heliangelus

Heliangelus is a genus of hummingbirds found in the Andes Mountains of South America. The genus is comprised of three species: the long-tailed sylph (Heliangelus amethystinus), the green-tailed sylph (Heliangelus exoxema), and the violet-tailed sylph (Heliangelus viola). These hummingbirds are characterized by their iridescent plumage, long, forked tails, and specialized beaks. They inhabit a range of habitats, from cloud forests to alpine meadows, and are known for their active and acrobatic flight.

The long-tailed sylph is the largest species in the genus, measuring up to 15 centimeters in length. It is distinguished by its long, streamer-like tail feathers and its vibrant, metallic green body. The green-tailed sylph is smaller, with a more subdued green coloration and a shorter, emerald-green tail. The violet-tailed sylph is the smallest species, possessing a striking violet tail that contrasts with its otherwise green and gray plumage.

These hummingbirds feed primarily on nectar from flowers, using their long, slender beaks to access the sweet liquid. They are also known to consume small insects and spiders, which provide essential protein. Heliangelus species are important pollinators in their respective ecosystems, playing a crucial role in the reproduction of many plant species. Their conservation status varies, with some species facing threats from habitat loss and degradation.