Black-capped Tanager

Stilpnia heinei

Dagua - Cali Valle Del Cauca Colombia

Quick Facts

  • Scientific Name: Stilpnia heinei
  • Spanish Name: Tangara capuchinegra
  • Family: Thraupidae
  • Known Nicknames: Heine's Tanager
  • Average Length: 13 cm / 5.1 in
  • Average Weight: 18–22 g / 0.63–0.78 oz
  • Wingspan: 19–22 cm / 7.5–8.7 in
  • Key Feature: Glossy black crown and nape contrasting with silvery-blue upperparts in males
  • Primary Diet: Omnivore (Primarily Frugivore and Insectivore)
  • Range: Andes of Colombia, Venezuela, and Ecuador
  • Habitat: Humid montane forest, forest edges, and second-growth woodland
  • Social Structure: Pairs or small groups; frequently joins mixed-species flocks
  • Nesting/Breeding: Open cup nest in dense foliage or shrubs
  • Statut de conservation : Préoccupation mineure (LC)
  • Population Trend: Stable

The Black-capped Tanager (*Stilpnia heinei*) is a striking songbird native to the humid montane forests and edges of the Andes Mountains in South America. Most notable for its vivid sexual dimorphism, the male is draped in luminous, silvery-blue plumage that contrasts sharply with a deep, jet-black crown, giving the species its name. A closer look reveals a unique "scaly" texture across its mantle and breast, created by dark feather centers framed by shimmering, pale edges. While the female is more subtly attired in shades of mossy green and dull yellow, both sexes are highly active foragers, often seen flitting through the canopy in mixed-species flocks to feast on berries and small insects. This small but charismatic bird is a jewel of the cloud forests, blending elegant coloration with an energetic presence that makes it a favorite among high-altitude birdwatchers.

Faits amusants

These birds are masters of acrobatic foraging, frequently seen hanging upside down or performing nimble mid-air twists to snatch berries and insects from the underside of leaves. They are highly social "mixers," often acting as the energetic core of mixed-species flocks where their restless movement helps flush out prey for other birds. While the males are named for their striking, polished jet-black crowns, their body plumage possesses a unique iridescent quality that can shift from turquoise to a deep silvery-blue depending on the angle of the sunlight, providing a natural form of shimmering camouflage within the dappled light of the Andean canopy.

Habitats et répartition

The geographical range of this bird extends across the northern Andes, primarily within Colombia and Venezuela, with some populations reaching into northeastern Ecuador. It is particularly prevalent in the Sierra Nevada de Santa Marta and throughout the various branches of the Colombian and Venezuelan cordilleras. In terms of habitat, it favors humid montane forests, forest edges, and semi-open areas such as clearings or second-growth woodlands. It is also frequently observed in human-modified landscapes like gardens, shrubby pastures, and shade-grown coffee plantations, typically occupying elevations between 1,000 and 2,800 meters.

Comportements & Reproduction

These birds are typically observed in pairs or small family groups, often moving restlessly through the canopy or forest edges. While they are relatively social and frequently join mixed-species foraging flocks to find insects and fruit, they remain territorial during the breeding season. Their social structure is primarily centered around monogamous pairs that cooperate in maintaining their immediate foraging area and protecting their resources from competitors. For reproduction, they construct small, cup-shaped nests hidden within dense foliage or mossy branches to provide camouflage from predators. The female typically lays two eggs and handles the majority of the incubation, while the male assists by providing food and defending the nesting site. Both parents share the responsibility of feeding the fledglings, ensuring a higher survival rate through dedicated biparental care.

Alimentation

The Black-capped Tanager maintains an omnivorous diet that primarily consists of a variety of small fruits and berries, often favoring those from the Melastomataceae and Ericaceae families. To supplement this plant-based intake, it actively hunts for invertebrates, including insects and spiders, which it typically gleans from the foliage, mossy branches, and twigs of the Andean forest canopy. An interesting aspect of its feeding behavior is its tendency to participate in mixed-species foraging flocks, where it moves rapidly through the trees to locate food sources alongside other bird species. Furthermore, these birds are essential contributors to their ecosystem as seed dispersers because they frequently swallow small fruits whole, passing the seeds through their digestive tracts intact to be deposited in new locations throughout the forest.

Couleurs

The Black-capped Tanager is distinguished by its prominent jet-black crown, which contrasts sharply against shimmering silvery-blue to turquoise upperparts. Males feature a dusky blue-gray throat and breast that fades into a paler belly, while females display more cryptic olive-green plumage and a muted grayish cap. This iridescent blue-green coloration functions as disruptive camouflage within the sun-dappled canopy, allowing the bird to blend into the shifting light and shadows of its montane forest habitat.