Colibri étincelant

En bref

• Scientific Name: Colibri coruscans
• Spanish Name: Colibrí rutilante
• Famille : Trochilidae
• Known Nicknames: Sparkling Violet-ear
• Average Length: 13–15 cm / 5.1–5.9 in
• Average Weight: 6.7–8.5 g / 0.24–0.30 oz
• Wingspan: 18–20 cm / 7.1–7.9 in
• Key Feature: Iridescent violet-blue patches on the ears and center of the belly
• Primary Diet: Nectarivore and Insectivore
• Range: Andes Mountains from Venezuela to Northwest Argentina
• Habitat: Montane forest edges, shrublands, gardens, and paramo
• Structure sociale : Solitaire et très territorial
• Nesting/Breeding: Cup-shaped nest on horizontal branches
• Statut de conservation : Préoccupation mineure (LC)
• Évolution démographique : Stable

The Sparkling Violetear (*Colibri coruscans*) is a captivating inhabitant of the high-altitude Andean highlands, renowned for its shimmering iridescent green plumage and the brilliant, metallic violet-blue patches that adorn its "ears" and central belly. As the largest and most vocal member of the violetear genus, this hummingbird is distinguished by its remarkably bold and territorial nature, often fearlessly defending nectar sources from much larger avian rivals. A truly unique feature of this species is its persistent, rhythmic song—a rarity among typically quiet hummingbirds—along with its incredible physiological ability to survive freezing mountain nights by entering a state of deep torpor. With its combination of aggressive charisma and radiant, jewel-like colors, the Sparkling Violetear is a standout gem of the South American wilderness.

Faits amusants

The Sparkling Violetear is famously pugnacious, frequently picking fights with birds many times its size to defend its territory. It stands out from other hummingbirds by being a relentless singer, chirping rhythmic melodies from high perches for most of the day. During aggressive displays or courtship, it can physically flare its iridescent violet "ears" outward, making its head appear wider and more intimidating. To survive the frigid nights of the Andes, this bird enters a profound state of torpor, dropping its body temperature significantly to conserve energy until morning.

Habitats et répartition

This species is widely distributed along the Andes Mountains, stretching from northern Venezuela and Colombia through Ecuador, Peru, and Bolivia to northwestern Argentina and northern Chile. It primarily inhabits high-altitude regions, typically found between 1,700 and 4,500 meters above sea level, though it is known to make seasonal altitudinal migrations to track blooming flowers. Its natural habitats include montane forest edges, high-altitude scrublands, and the open grasslands of the páramo. Highly adaptable to human presence, it is also a common sight in urban parks, suburban gardens, and agricultural areas. It favors semi-open landscapes where diverse flowering plants provide the nectar necessary to support its active, territorial lifestyle.

Comportements & Reproduction

Highly territorial and notably aggressive, this species dominates nectar sources through persistent vocalizations and physical intimidation of both conspecifics and other bird species. It maintains a solitary social structure, with individuals defending large feeding territories using a distinctive, repetitive metallic song. Uniquely, both males and females are known to sing—a trait less common among other hummingbirds—which serves to reinforce their territorial boundaries throughout the year. During the breeding season, males perform high-altitude aerial displays and sing from prominent perches to attract multiple partners, following a polygynous mating system. Once mating occurs, the female takes full responsibility for the reproductive process, constructing a compact, cup-shaped nest from plant fibers, moss, and spider silk. She typically lays two eggs and handles all incubation and chick-rearing duties alone, carefully selecting nesting sites in low shrubs or trees to provide cover for her young.

Alimentation

The Sparkling Violetear primarily sustains itself on a high-energy diet of nectar, which it extracts from a wide variety of flowering plants using its long, slender bill and specialized brush-tipped tongue. While it favors tubular flowers such as those from the Bromeliaceae and Ericaceae families, this hummingbird is notably opportunistic and aggressive, often defending rich nectar sources from larger competitors. To supplement its sugar intake with essential proteins and minerals, it frequently engages in "hawking" to catch small insects and spiders mid-air or gleans them from foliage. Interestingly, the Sparkling Violetear possesses an incredibly high metabolism that requires it to consume more than its own body weight in nectar daily, and it often performs altitudinal migrations to follow the seasonal blooming of its favorite floral resources.

Couleurs

The Sparkling Violetear is primarily covered in iridescent metallic green plumage, distinguished by glittering violet-blue patches behind the eyes and on the center of its breast. A prominent blue patch marks the belly, while its broad, greenish-blue tail features a dark subterminal band. This brilliant iridescence serves both as a vivid territorial display and as disruptive coloration that helps the bird blend into sun-dappled high-altitude foliage.