White-tailed starfrontlet

Minca Magdalena Colombia

Quick Facts

  • Scientific Name: Coeligena phalerata
  • Spanish Name: Colibrí coliblanco
  • Family: Trochilidae
  • Known Nicknames: White-tailed Star-frontlet
  • Average Length: 11–12 cm / 4.3–4.7 in
  • Average Weight: 5.5–6.5 g / 0.19–0.23 oz
  • Wingspan: N/A
  • Key Feature: Iridescent green body with a white tail and a brilliant blue or violet star-shaped forehead patch
  • Primary Diet: Nectarivore (primarily feeds on nectar from flowering plants, also small insects)
  • Range: Eastern slope of the Andes in Colombia (Santander, Norte de Santander, and adjacent areas)
  • Habitat: Montane cloud forest and forest edges at elevations of 1,400–2,400 m (4,600–7,900 ft)
  • Social Structure: Solitary (territorial around feeding areas)
  • Nesting/Breeding: Small cup-shaped nest built on a horizontal branch or fern frond
  • Conservation Status: Least Concern (LC)
  • Population Trend: Stable

The White-tailed starfrontlet (*Coeligena phalerata*) is a dazzling hummingbird endemic to the cloud forests of Colombia’s Sierra Nevada de Santa Marta, renowned for its iridescent beauty and restricted range. This medium-sized bird boasts a striking deep green body with a glittering blue-green throat and a distinctive white-tipped, forked tail that flares dramatically in flight, while males sport a brilliant, star-like white forehead patch—the "starfrontlet"—that gives the species its name. Its most unique feature is a long, slightly decurved black bill, perfectly adapted for sipping nectar from tubular flowers, often while hovering with remarkable precision. Rare and elusive, this "jewel of the mountains" is a sought-after sight for birdwatchers, symbolizing the fragile biodiversity of its high-altitude home.

Fun Facts

The White-tailed starfrontlet performs a unique "sun salutation" display, where males perch facing the sun and repeatedly fan their iridescent throat feathers while bobbing their heads, creating a dazzling strobe-like effect to attract mates. Its long, tweezer-like bill is precisely curved to match the corolla of its favorite nectar source, the *Fuchsia* flower, forcing the bird to hover at an extreme 90-degree angle for a sip. As a high-altitude specialist, it can enter a state of controlled hypothermia at night, dropping its body temperature by over 10°C to save energy in the thin, cold air.

Habitats & Distribution

The white-tailed starfrontlet is endemic to Colombia, with its distribution restricted to the Sierra Nevada de Santa Marta mountain range. It inhabits humid montane forests and elfin forests, typically at elevations between 1,200 and 2,400 meters. This species is most commonly found in the understory and edges of these cloud forests, often near streams or areas with abundant moss and epiphytes, though it may also venture into adjacent shrubby clearings and secondary growth.

Behaviours & Reproduction

The white-tailed starfrontlet is generally solitary outside of breeding, with males defending small feeding territories rich in flowering plants. Mating is promiscuous, and males perform a distinctive aerial display—a steep, fluttering dive followed by a rapid ascent—to court passing females. There is no pair bond; after copulation, the female alone builds a cup-shaped nest, typically in a mossy crevice or on a vertical bank, incubates two white eggs for about 16–18 days, and feeds the chicks with regurgitated nectar and small arthropods. A unique strategy involves the female’s reliance on specific high-altitude cloud forest flowers that bloom sequentially, ensuring a steady nectar supply during the extended chick-rearing period, which can last up to 28 days before fledging.

Diet

The white-tailed starfrontlet is a nectar-specialist hummingbird, feeding primarily on the high-energy nectar of various flowering plants, including species from the genera *Bomarea*, *Fuchsia*, and *Palicourea*, which it accesses by hovering and inserting its long, specialized bill into the corollas. To supplement its diet with essential proteins, vitamins, and minerals, it also actively hunts small insects and spiders, often gleaning them from leaves or catching them in mid-air. An interesting fact is that like many high-altitude hummingbirds, it must consume up to twice its body weight in nectar daily to fuel its extremely fast metabolism, and it enters a state of torpor at night to conserve energy. Additionally, its diet makes it a crucial pollinator for the montane cloud forests of Colombia, as it carries pollen between flowers while foraging.

Colors

The White-tailed starfrontlet is a hummingbird with mostly dark green to bronze-green upperparts and a glittering violet-blue throat and chest. Its most distinctive feature is the entirely white tail, which contrasts sharply with the body, and a small white postocular spot behind the eye. The male has a bright blue crown patch, while the female is duller with buffy underparts; neither sex has specific camouflage adaptations, as their iridescent colors are for display rather than concealment.