Introduction
The Dusky Starfrontlet, Coeligena orina, is a rare hummingbird endemic to the Western Andes of Colombia. It was described from a specimen collected in 1951 and was not recorded again for more than 50 years, until its rediscovery in 2004. The species is associated with high-elevation elfin forest, humid montane forest and páramo habitats.
Physical Description
The Dusky Starfrontlet is a small hummingbird weighing approximately 6.7–7.2 g in the limited sample measured. Its bill is notably long for the genus, measuring about 32–36 mm in exposed culmen length, with females generally having the longer bill.
Adult males have a velvety black crown, head and mantle, a brilliant blue-green to golden-green frontlet and a large cobalt-blue throat patch. The back and wing coverts are green, while the rump, upper tail-coverts and belly show vivid lime-green to golden-green iridescence. The tail is green and the wings are dark.
Adult females are mainly green above, with blackish feather tips and bases creating a subtly scaled appearance on the crown and nape. They have a sharply defined cinnamon-buff throat, a largely green breast and a bright green belly and rump. The throat is separated from the breast by a line of green markings near the malar area.
Immature males are duller than adults. They lack the brilliant frontlet, show heavier dark scaling and have a smaller, less distinct blue throat patch. This age-related appearance contributed to earlier uncertainty about the species’ taxonomic status.
Range and Habitat
The Dusky Starfrontlet is endemic to Colombia and is known from the northern Western Andes. Confirmed localities include the Páramo de Frontino in Antioquia and the Farallones de Citará near the Antioquia–Chocó border. Additional records and surveys have considered other high-elevation areas of the Western Andes, but occurrence outside confirmed localities should be treated cautiously.
It is primarily associated with the transition between elfin forest, tall humid montane forest and open páramo. Confirmed observations have been made mainly between about 3,100 and 3,500 metres above sea level, although the wider protected landscape at known sites covers a broader elevational range. The species appears particularly dependent on high peaks where páramo and stunted, epiphyte-rich forest occur together.
The Dusky Starfrontlet is non-migratory in the usual sense. Its distribution is naturally fragmented because suitable high-elevation habitat is limited to isolated peaks and páramo complexes.
Where to See This Species
ProAves Colibrí del Sol Reserve, Antioquia, Colombia
This reserve in the El Chuscal area of Urrao was established specifically to protect habitat for the Dusky Starfrontlet after its rediscovery in the Páramo del Sol in 2004. Its 2,700–3,600 metre elevational range includes high Andean forest, páramo and the forest–páramo transition used by the species. Visits require advance coordination and a local guide.
Nearby accommodation: The reserve provides basic accommodation, while Urrao is the nearest practical town for guest houses, small hotels and other local lodging.
Las Orquídeas National Natural Park, Antioquia, Colombia
The park extends across the municipalities of Frontino, Urrao and Abriaquí and includes Andean forest and a small páramo area. The park authority lists the Dusky Starfrontlet among its recorded fauna, making the park a legitimate location for targeted searches in suitable high-elevation habitat. Access and local conditions should be confirmed with the park authority before travelling.
Nearby accommodation: Urrao and Frontino are the most practical gateway towns, with local hotels, guest houses and other basic accommodation.
Behaviour and Diet
The Dusky Starfrontlet is an agile, fast-flying hummingbird that forages in the canopy, middle levels of elfin forest and along forest edges. Observations at Páramo de Frontino recorded individuals in both elfin forest and tall humid forest.
It feeds on nectar from suitably shaped flowers, including the catkin-mistletoe Aetanthus in observations from Páramo de Frontino. It also takes small arthropods. Stomach contents examined from specimens included tiny parasitic wasps and other small insects, indicating that its diet is not restricted to nectar.
Like other hummingbirds, it is likely to defend profitable feeding areas, but detailed information on territorial behaviour, courtship, nesting and breeding success remains limited. The available field observations do not support firm claims about its breeding season or migration.
Identification Tips
- Look for a dark, green-bodied hummingbird in high-elevation forest and páramo transition habitat.
- An adult male shows a striking blue-green to golden-green frontlet, extensive black on the head and upper breast, a cobalt-blue throat patch and a bright lime-green belly and rump.
- The female has a cinnamon-buff throat sharply separated from a largely green breast, together with a subtly scaled crown and nape.
- Both sexes have vivid lime-green to golden-green on the belly, rump and upper tail-coverts, rather than the bronzy or reddish-gold tones associated with some similar Coeligena species.
- Compared with the Golden-bellied Starfrontlet, the Dusky Starfrontlet has a darker male head and chest, a bluer throat patch and a greener, less golden belly. Its bill is also relatively long.
- Immature males can be confusing because they lack the adult male’s brilliant frontlet and have duller, more heavily scaled plumage.
Conservation Status
The Dusky Starfrontlet is currently classified as Endangered on the IUCN Red List. Older assessments and earlier conservation literature treated it as Critically Endangered, reflecting the very small known range and the scarcity of records at the time. Subsequent information has improved understanding of its distribution and population, but the species remains highly threatened.
The principal threats are the loss and degradation of high-elevation forest and páramo habitat, including clearance for agriculture, livestock grazing, settlement and other land-use pressures. Its naturally fragmented distribution also increases the risk associated with habitat isolation and local disturbance.
Important conservation measures include protecting the remaining forest–páramo transition, maintaining connectivity between high-elevation habitats, supporting reserves such as ProAves Colibrí del Sol and improving surveys and population monitoring. Responsible, guide-led birdwatching can support local conservation, but visits should avoid disturbance and follow reserve and protected-area rules.
Frequently Asked Questions
Where is the Dusky Starfrontlet found?
It is endemic to Colombia and is known mainly from high-elevation sites in the northern Western Andes, especially Páramo de Frontino and Farallones de Citará.
What does the Dusky Starfrontlet look like?
The male is dark green and black with a brilliant blue-green frontlet, a cobalt-blue throat patch and a bright lime-green belly and rump. The female has a buff throat, green breast and subtly scaled crown.
How high does the Dusky Starfrontlet live?
Most confirmed observations come from approximately 3,100–3,500 metres above sea level, in elfin forest, humid montane forest and páramo transition habitat.
What does the Dusky Starfrontlet eat?
It takes nectar from high-elevation flowers and also feeds on small arthropods, including tiny wasps and other insects recorded in examined stomach contents.
Is the Dusky Starfrontlet endangered?
Yes. It is classified as Endangered on the IUCN Red List because of its restricted, fragmented distribution and continuing habitat loss and degradation.
Where is the best place to look for this species?
The ProAves Colibrí del Sol Reserve near Urrao is the most specifically managed site for the species. Las Orquídeas National Natural Park is another documented location, although sightings are difficult and high-elevation access requires careful planning.
References
- IUCN Red List of Threatened Species
- Fundación ProAves
- Ornitología Colombiana
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