The Velvet-purple Coronet (Boissonneaua jardini) is one of the most visually captivating hummingbirds native to the humid montane forests along the western slopes of the Andes in South America. Known for its shimmering iridescent plumage and specialized feeding behavior, this species embodies the rich biodiversity and ecological complexity of the Andean foothills. With its limited range and unique adaptations, the Velvet-purple Coronet offers a fascinating glimpse into the evolutionary artistry of hummingbirds and the critical importance of conserving their fragile cloud forest habitats.
Scientific Classification
The Velvet-purple Coronet belongs to the family Trochilidae, which encompasses all hummingbirds, a diverse group of small, nectar-feeding birds endemic to the Americas. Its full scientific name is Boissonneaua jardini, placing it within the genus Boissonneaua, which also includes two other species: the Chestnut-breasted Coronet (Boissonneaua matthewsii) and the Buff-tailed Coronet (Boissonneaua flavescens). The genus is characterized by robust-bodied hummingbirds with broad wings, adapted for hovering and maneuvering through dense forest understories.
Described scientifically in 1851, the Velvet-purple Coronet is notable for its iridescent coloration and relatively large size compared to many other hummingbird species. It is a member of the subfamily Lesbiinae, a clade often referred to as “brilliants,” which are recognized for their vibrant plumage and specialized ecological niches in mountainous regions.
Geographic Range & Distribution
The Velvet-purple Coronet is endemic to the humid montane forests on the western slopes of the Andes, specifically in western Colombia and the northwestern regions of Ecuador. This species primarily inhabits elevations ranging from 1,000 to 2,200 meters above sea level, where the climate is cool and moist, and the forest canopy is dense with epiphytes and flowering plants.
Its distribution is relatively patchy, confined to the moist foothills and lower montane cloud forests, ecosystems characterized by persistent mist and high biodiversity. These habitats provide an abundance of nectar-producing flowers, which the Velvet-purple Coronet heavily relies on for sustenance. The geographic range includes protected areas such as the Munchique National Park in Colombia and the Cotacachi-Cayapas Ecological Reserve in Ecuador, regions vital for the species’ persistence due to ongoing habitat loss elsewhere.
Physical Description
The Velvet-purple Coronet is a medium-sized hummingbird, measuring approximately 11 to 12 centimeters (4.3 to 4.7 inches) in length and weighing around 7 to 9 grams. One of the most striking features of this bird is its iridescent plumage, which changes dramatically depending on the angle of light. The crown and underside display a velvet-like deep bluish-purple sheen, giving the species its common name.
The back and upper wing coverts are a shimmering greenish-blue, while the primary and secondary flight feathers are dark, often appearing black in dim light. The underwing coverts are rufous or reddish-brown, contrasting beautifully with the darker flight feathers and adding a splash of color visible during flight. The outer flight feathers have distinctive white edges, which stand out against the otherwise dark wings, especially in low-light conditions.
The species exhibits slight sexual dimorphism, with males typically showing more intense coloration and a slightly larger size than females. Both sexes have short, straight bills adapted for extracting nectar from tubular flowers, and their relatively strong wings facilitate agile flight maneuvers through dense vegetation.
Behavior & Diet
The Velvet-purple Coronet is a solitary bird outside the breeding season and is known for its territorial behavior, especially regarding feeding sites. It primarily feeds on nectar from a variety of flowering plants, favoring those with tubular shapes and bright colors such as red, orange, and pink, which typically indicate high nectar content. Common nectar sources include epiphytes, shrubs, and small trees found within its cloud forest habitat.
Besides nectar, the Velvet-purple Coronet supplements its diet with small insects and spiders, which provide essential proteins and nutrients not available in nectar. These insects are often caught through hawking flights where the bird darts out to snatch prey mid-air or gleans them from leaves and bark. This mixed diet supports the high metabolic demands of hummingbirds, especially during the energy-intensive breeding season.
Territorial males vigorously defend rich feeding territories, chasing away intruders with rapid aerial chases and vocalizations. Their aggressive behavior ensures exclusive access to valuable nectar resources, which in turn supports their energy needs for mating displays and territory defense. Females, while also territorial, are less aggressive and often forage over larger areas.
Breeding & Reproduction
Breeding behavior in the Velvet-purple Coronet follows typical hummingbird patterns, with males displaying elaborate courtship flights to attract females. The male performs a distinctive U-shaped flight pattern in front of a receptive female, showcasing his iridescent plumage and aerial agility. After mating, the male does not participate further in nesting or chick-rearing, as is common in hummingbirds.
The female assumes full responsibility for nest construction, incubation, and feeding of the chicks. She builds a delicate cup-shaped nest using soft plant fibers, moss, and spider silk, which secures the structure and allows it to expand as the chicks grow. The nest is typically placed on a low, thin horizontal branch within shrubs or small trees, well-camouflaged to protect against predators. According to Bug Guide, this species is well documented.
Females usually lay a clutch of two small, white eggs, each measuring approximately 12 millimeters in length. Incubation lasts about 15 to 19 days, during which the female diligently warms the eggs. After hatching, the altricial chicks are born blind and featherless, dependent entirely on the mother for warmth and nourishment. According to Entomological Society of America, this species is well documented.
The female feeds the chicks regurgitated nectar mixed with insects to provide sufficient protein for rapid growth. Brooding continues intensely for the first one to two weeks; thereafter, the chicks begin to thermoregulate independently. Fledging occurs relatively early, between 7 and 10 days after hatching, enabling the young birds to leave the nest and begin learning to forage on their own.
Conservation Status
The International Union for Conservation of Nature (IUCN) currently classifies the Velvet-purple Coronet as a species of Least Concern. Although the species is not considered immediately threatened, its habitat is under increasing pressure from deforestation, agriculture, and human settlement expansion in the Andean foothills.
Cloud forests, the Velvet-purple Coronet’s primary habitat, are among the world’s most endangered ecosystems, with significant losses over the past decades. Habitat fragmentation poses risks to the species by reducing available feeding and breeding sites and isolating populations. Conservation efforts focused on protecting montane forests and establishing ecological corridors are critical to ensuring the long-term survival of this and other cloud forest specialists.
Protected areas within the species’ range provide important refuges, but continued monitoring and habitat preservation are essential. The Velvet-purple Coronet, with its reliance on specific flowering plants and undisturbed habitats, serves as an indicator species for the health of cloud forest ecosystems.
Interesting Facts
The Velvet-purple Coronet’s iridescent plumage results from the microscopic structure of its feathers rather than pigment alone. Tiny platelets in the feather barbules reflect and refract light, creating the bird’s dazzling metallic sheen that can shift from deep blue to purple depending on the angle of sunlight.
Unlike many hummingbirds that migrate seasonally, the Velvet-purple Coronet is primarily sedentary, residing year-round within its montane forest range. This stability is linked to the constant availability of nectar-rich flowers in its cloud forest habitat, unlike the more variable environments found at lower elevations.
Its territorial aggression over feeding grounds makes it a formidable competitor among hummingbirds, often dominating smaller species in its territory. Despite this, the Velvet-purple Coronet coexists with other hummingbird species by partitioning feeding niches based on flower type and height in the forest.
Another fascinating aspect of this species is its ability to stretch its nest significantly as chicks grow, thanks to the elastic properties of spider silk incorporated into the nest’s structure. This remarkable adaptation allows the nest to accommodate growing chicks without needing frequent reconstruction.
Finally, the Velvet-purple Coronet’s rapid wingbeats—typical of hummingbirds—enable it to hover with exceptional precision. Its wings can beat up to 70 times per second, facilitating agile flight and efficient foraging among dense foliage.
Conclusion
The Velvet-purple Coronet is a stunning example of hummingbird diversity, uniquely adapted to the moist montane forests of the western Andes. Its iridescent colors, specialized feeding habits, and intricate breeding behaviors highlight the intricate relationships between cloud forest species and their environment. While currently not endangered, the species’ dependence on fragile habitats underscores the importance of continued conservation efforts to preserve the rich biodiversity of Andean cloud forests. For birdwatchers, photographers, and nature enthusiasts, encountering the Velvet-purple Coronet offers a rare and rewarding glimpse into the vibrant life of South America’s highland ecosystems.
