Introduction
The Purple-throated Sunangel (Heliangelus viola) is a small Andean hummingbird found in Ecuador and northern Peru. It is named for the male’s iridescent purple gorget, which flashes brightly when viewed in good light. The species is generally associated with humid montane habitats and is regarded as a resident rather than a long-distance migrant.
Physical Description
The Purple-throated Sunangel is a compact hummingbird measuring approximately 11–13 centimetres in length and weighing about 5–6 grams. It has a short, straight, blackish bill and a deeply forked tail, with shining green central feathers and darker outer feathers.
Adult males have mainly green upperparts and underparts, a blue-green iridescent frontlet above the bill, and a brilliant deep-violet gorget bordered below by a blue-green or turquoise band. The intensity of the colours changes with the angle of the light. The female lacks the bright frontlet and prominent purple gorget. Her throat is pale buff to whitish, usually marked with bronzy-green or dusky speckling, and her tail is generally shorter and less deeply forked.
Juveniles resemble adult females and gradually develop the stronger head and throat colours of adult males as they mature.
Range and Habitat
The species occurs along the western slopes of the Andes from north-central and southern Ecuador into northern Peru, including the departments of Cajamarca and Amazonas. It is found at approximately 2,100–3,500 metres above sea level, although local records vary with terrain and habitat.
Purple-throated Sunangels use the interior and edges of humid montane and cloud forests, secondary woodland, alder stands and dense shrubbery. They may also occur in disturbed highland landscapes where flowering plants are available. The species is considered sedentary, with no well-established pattern of long-distance migration.
Some taxonomic treatments have recognised geographic forms within the species, particularly in Ecuador and northern Peru. Current major bird lists generally treat the Purple-throated Sunangel as a single species without formally recognised subspecies.
Where to See This Species
Utuana Reserve, Loja Province, Ecuador
Utuana Reserve protects remnant evergreen montane forest at approximately 2,120–2,640 metres. The reserve’s bird list specifically includes the Purple-throated Sunangel, making it one of the more reliable documented sites for the species in southern Ecuador. Look along forest edges, flowering shrubs and open sections of the reserve’s montane woodland.
Nearby accommodation: The village of Utuana and the town of Sozoranga provide the nearest practical bases, with guest houses, simple local accommodation and small hotels available in the wider Loja Province birding area.
Tapichalaca Reserve, Zamora-Chinchipe Province, Ecuador
Tapichalaca is a well-established Jocotoco reserve protecting humid montane and cloud-forest habitats across a broad elevational range. The Purple-throated Sunangel has been recorded at the reserve, although other sunangel species are more regularly highlighted there. Birders should concentrate on flowering areas, forest edges and suitable mid-elevation trails.
Nearby accommodation: Casa Simpson is located within Tapichalaca Reserve and provides lodge and cabin accommodation. The town of Palanda is the nearest recognised settlement for additional basic services.
Amazilia Bioreserva, Amazonas, Peru
Amazilia Bioreserva lies in the Alto Utcubamba valley and protects montane habitats between approximately 1,750 and 2,700 metres. The reserve’s bird information lists the Purple-throated Sunangel among its regularly sought species, making it a practical site for observing the bird in northern Peru. Check gardens, forest edges and flowering vegetation around the reserve and lodge area.
Nearby accommodation: The reserve itself provides lodge accommodation. Chachapoyas and the settlements of the Alto Utcubamba valley offer additional hotels, guest houses, lodges and self-catering options.
Behaviour and Diet
Like other hummingbirds, the Purple-throated Sunangel feeds mainly on flower nectar and can hover while probing blossoms with its bill. It also takes small insects and spiders, which provide additional protein. Insects may be captured from a perch or picked from vegetation.
Individuals can be territorial around productive feeding areas and may chase other hummingbirds from favoured flowers. The species is active throughout the day and must feed frequently to meet the high energetic demands of hovering flight. In parts of Ecuador, its distribution is associated with flowering stands of introduced blue gum, Eucalyptus globulus, although it also uses native montane vegetation.
Available breeding information is limited. The breeding season has been reported mainly from October to January, and the clutch is usually two white eggs. The female is responsible for incubation, while detailed information about the nestling period and fledging behaviour remains limited.
Identification Tips
- Look for a small, dark-billed hummingbird with green plumage and a strongly forked tail.
- Adult males are distinctive when the light catches the deep purple gorget, blue-green frontlet and lower throat band.
- Females and juveniles are much plainer, with pale or tawny, speckled throats and no obvious iridescent frontlet.
- Do not rely on colour alone. Iridescent throat feathers can appear dark, violet, blue or green depending on the viewing angle.
- The species may be confused with other Andean sunangels or similarly sized hummingbirds. Geographic range, the deeply forked tail, the male’s purple gorget and the female’s pale speckled throat are useful identification features.
Conservation Status
The Purple-throated Sunangel is currently assessed as Least Concern. Its population size has not been reliably quantified, but available assessments consider the population broadly stable, and the species is locally fairly common in parts of its range.
The principal long-term concerns are the loss and fragmentation of montane forest through deforestation, agricultural expansion and other land-use changes. Climate change may also alter the distribution of flowering plants and suitable high-elevation habitat. Protection of cloud forests, sustainable management of surrounding land and the maintenance of habitat corridors are important conservation measures.
Frequently Asked Questions
Where does the Purple-throated Sunangel live?
It lives in the Andes of Ecuador and northern Peru, mainly on montane forest edges, cloud forests, secondary woodland and shrublands at roughly 2,100–3,500 metres.
What does the Purple-throated Sunangel eat?
Its diet consists mainly of nectar, supplemented by small insects and spiders. It may capture insects from perches or glean them from vegetation.
How can you identify a male Purple-throated Sunangel?
The adult male has green plumage, a blue-green frontlet above the bill, a deep purple iridescent gorget and a blue-green band below the throat. Its tail is distinctly forked.
Are female Purple-throated Sunangels brightly coloured?
Females are less iridescent than males. They usually have a pale buff or whitish throat with greenish or dusky speckling and lack the male’s obvious purple gorget and bright frontlet.
Is the Purple-throated Sunangel migratory?
It is generally considered sedentary. Individuals may move locally in response to flowering conditions, but there is no established long-distance migration pattern.
Is the Purple-throated Sunangel endangered?
No. The species is currently classified as Least Concern, although continued protection of Andean montane and cloud-forest habitat remains important.
References
- BirdLife International
- IOC World Bird List
- Fundación Jocotoco
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