Santa Marta Mountain Tanager

Anisognathus melanogenys

Santa Marta Mountain Tanager - Cerro Kennedy, Magdalena, Colombia

Quick Facts

Endemic
  • Scientific Name: Anisognathus melanogenys
  • Spanish Name: Tangara de Santa Marta
  • Family: Thraupidae
  • Known Nicknames: Black-cheeked Mountain-tanager, Santa Marta Mountain-Tanager
  • Average Length: 18.5 cm / 7.3 in
  • Average Weight: 37–45 g / 1.3–1.6 oz
  • Wingspan: N/A
  • Key Feature: Bright golden-yellow crown and nape contrasting with a prominent black facial mask
  • Primary Diet: Omnivore (Primarily Frugivore and Insectivore)
  • Range: Endemic to the Sierra Nevada de Santa Marta in Northern Colombia
  • Habitat: Humid montane forest, elfin forest, and forest edges at high elevations (1,600–3,200m)
  • Social Structure: Social; typically found in pairs or small groups and often joins mixed-species foraging flocks
  • Nesting/Breeding: Cup nests constructed in dense foliage of trees or shrubs
  • Conservation Status: Least Concern (LC)
  • Population Trend: Stable

The Santa Marta Mountain Tanager (*Anisognathus melanogenys*) is a striking songbird found exclusively in the mist-shrouded cloud forests of the Sierra Nevada de Santa Marta in Colombia. This high-altitude endemic is easily identified by its vibrant golden-yellow underparts contrasted against deep blue-gray wings and a dark back. Its most defining features include a bold black facial mask that frames a piercing dark eye, accented by a tiny, luminous yellow spot just below the cheek and a brilliant cerulean-blue crown. Often observed traveling in lively social groups or mixed-species flocks, this charismatic tanager flits through the canopy in search of berries and small insects, serving as a brilliant flash of color within its restricted, emerald-green mountain home.

Fun Facts

Endemic exclusively to the Sierra Nevada de Santa Marta in Colombia, this bird is easily recognized by its striking yellow "teardrop" or cheek spot, which stands out against its dark facial mask like a permanent beauty mark. Despite their vibrant appearance, these tanagers are remarkably hardy, thriving in chilly, mist-shrouded high-altitude forests where they often act as the life of the "bird party." They are highly social and frequently lead mixed-species foraging flocks, darting through the canopy in a fast-paced search for berries and insects while constantly communicating with high-pitched, rhythmic calls.

Habitats & Distribution

This species is strictly endemic to the Sierra Nevada de Santa Marta, an isolated mountain range in northern Colombia. Within this restricted geographical range, it is primarily found at elevations ranging from 1,500 to 3,200 meters above sea level, although it is most frequently observed in the higher reaches of the cloud forest. Its preferred environments include humid montane forests, dense forest borders, and areas of lush secondary growth. It typically inhabits the canopy and sub-canopy levels of moss-covered trees, thriving in the cool, misty conditions and high-moisture ecosystems characteristic of this unique coastal mountain range.

Behaviours & Reproduction

These birds exhibit a highly social nature, frequently moving in pairs or small family groups of three to six individuals. They are active members of mixed-species foraging flocks, traversing the humid forest canopy and edges in search of fruit and small invertebrates. Their social structure is characterized by cohesive group movements, where members maintain contact through thin, high-pitched vocalizations while foraging through dense mossy foliage and epiphytes. Reproductive behavior is primarily monogamous, with breeding typically occurring between April and June. They construct sturdy, cup-shaped nests composed of moss, rootlets, and liverworts, usually well-hidden within thick vegetation to provide camouflage against predators. While specific details on clutch size are limited, both parents are believed to participate in the provisioning of nestlings, a common trait among mountain tanagers that ensures higher survival rates in their high-altitude cloud forest habitat.

Diet

The Santa Marta Mountain Tanager is primarily a frugivorous bird, subsisting on a diverse array of small fruits and berries, particularly those from plants in the Melastomataceae family such as Miconia. While fruit constitutes the bulk of its nutritional intake, this species also supplements its diet with various insects and small arthropods, which it gleans from foliage or occasionally catches mid-air. An interesting aspect of its feeding behavior is its high level of sociality; it is frequently observed foraging in active, mixed-species flocks where it searches for food from the lower understory up to the forest canopy. Furthermore, these tanagers exhibit impressive acrobatic skills, often hanging upside down or stretching at precarious angles to reach ripe berries located at the tips of thin branches.

Colors

The Santa Marta Mountain Tanager displays a vibrant golden-yellow crown and underparts contrasted by slate-blue upperparts and wings. It is defined by a bold black facial mask across the cheeks and a distinctive small yellow spot located just behind the eye. While its brilliant yellow provides high visibility for social signaling within the misty cloud forest, the dark blue-gray back offers camouflage against the shaded canopy when viewed from above.