White-tailed starfrontlet

Coeligena phalerata

Minca Magdalena Colombia

Quick Facts

  • Scientific Name: Coeligena phalerata
  • Spanish Name: Inca coliblanco
  • Family: Trochilidae
  • Known Nicknames: White-tailed Starfrontlet
  • Average Length: 11–14 cm / 4.3–5.5 in
  • Average Weight: 6.0–7.0 g / 0.21–0.25 oz
  • Wingspan: 12–15 cm / 4.7–5.9 in
  • Key Feature: Entirely white, deeply forked tail in males and an iridescent green forehead patch
  • Primary Diet: Nectarivore (Nectar and small insects/spiders)
  • Range: Endemic to the Sierra Nevada de Santa Marta in Northern Colombia
  • Habitat: Humid montane forests, forest edges, and elfin forests at elevations of 1,900–3,300 m
  • Social Structure: Solitary and highly territorial
  • Nesting/Breeding: Cup-shaped nests constructed from plant down and moss, typically hidden in dense foliage
  • Conservation Status: Near Threatened (NT)
  • Population Trend: Decreasing

The White-tailed starfrontlet (*Coeligena phalerata*) is a breathtaking hummingbird found exclusively in the mist-shrouded montane forests of the Sierra Nevada de Santa Marta in Colombia. This high-altitude gem is most famous for the male’s namesake feature: a brilliant, pure white tail that contrasts vividly against its shimmering emerald-green body and a glittering, iridescent turquoise-green forehead patch known as the "star." While females display a more subtle beauty with bronzy-green upperparts and warm cinnamon-buff underparts, both sexes possess the long, straight black bill characteristic of the *Coeligena* genus, perfectly adapted for sipping nectar from deep tubular flowers. As a restricted-range endemic, this agile flyer is a prized sight for birdwatchers, representing one of the most striking examples of avian specialization within its isolated Andean habitat.

Fun Facts

The male’s namesake snowy-white tail serves as a dramatic visual signal during high-speed aerial displays, contrasting sharply with its shimmering emerald body. These hummingbirds are dedicated "trap-liners," meaning they memorize complex, long-distance circuits to visit specific flowers in a precise order rather than defending a single territory. To survive the frigid nights of their high-altitude Colombian home, they can lower their body temperature significantly by entering torpor, a state of suspended animation. Additionally, their iridescent "frontlet," or forehead patch, acts like a biological neon sign, flashing brilliant colors only when viewed from specific angles to communicate with rivals and mates.

Habitats & Distribution

This species is strictly endemic to the Sierra Nevada de Santa Marta in northeastern Colombia, an isolated mountain range separated from the main Andes. Within this restricted geographical range, it is found primarily on the northern and western slopes, though it also occurs locally on the southern side of the massif. Its habitat consists of humid montane forests, high-altitude cloud forests, and forest edges, typically at elevations between 1,900 and 3,300 meters, though it occasionally descends as low as 1,400 meters. It thrives in moist subtropical and temperate zones, where it is frequently observed in the understory and mid-story of primary forests as well as in mature second-growth areas.

Behaviours & Reproduction

These hummingbirds are primarily solitary and exhibit strong territorial behavior, vigorously defending high-quality nectar sources from both competitors and other bird species. Their social structure is defined by a lack of long-term pair bonds, following a polygynous mating system where males focus on attracting multiple mates through elaborate aerial displays and vocalizations. Outside of the brief mating encounter, individuals rarely interact except during aggressive disputes over foraging patches, where they use their speed and agility to drive away intruders. Reproduction is characterized by a complete division of labor, as the female is solely responsible for all nesting duties. She constructs a small, resilient cup-shaped nest using moss, lichen, and spider silk, typically hidden within dense undergrowth to protect it from the humid mountain climate. After laying a clutch of two eggs, the female handles the entire incubation and chick-rearing process without any assistance from the male. This strategy allows the male to maximize his reproductive success by defending territories and seeking further mating opportunities, while the female relies on cryptic nesting and dedicated maternal care to ensure the survival of the offspring.

Diet

The White-tailed starfrontlet primarily sustains itself on a high-energy diet consisting of floral nectar supplemented by small arthropods. It frequently visits a variety of tubular flowers, particularly those from the Fuchsia, Bomarea, and Centropogon genera, using its specialized bill to access deep-seated nectar sources within the montane forests of the Sierra Nevada de Santa Marta. An interesting aspect of its foraging behavior is its strategy as a trap-liner, where it follows a consistent, repeatable route to visit various flowering plants throughout the day rather than aggressively defending a single territory. To fulfill its essential protein and mineral requirements, this hummingbird also captures small insects and spiders, either by hawking them in mid-air or gleaning them directly from foliage and spider webs, ensuring a balanced intake to support its high metabolic rate.

Colors

The male White-tailed starfrontlet features a striking, pure white tail that contrasts with its shimmering emerald-green body and a glittering turquoise-blue crown. Females are more subtle, displaying bronze-green upperparts, warm rufous underparts, and white-tipped outer tail feathers. This iridescent plumage aids in territorial signaling, while the green dorsal tones provide essential camouflage within the dense, mossy foliage of its high-altitude habitat.