Diademed Tanager

Open Bird Bucket List ↗

Quick Facts

  • Scientific Name: Stephanophorus diadematus
  • Spanish Name: Tangara diadema
  • Family: Thraupidae
  • Known Nicknames: Diademed Tanager, Diadem Tanager
  • Average Length: 20–22 cm / 8–8.7 in
  • Average Weight: 50–60 g / 1.8–2.1 oz
  • Wingspan: 30–35 cm / 12–14 in
  • Key Feature: Bright blue plumage with a distinctive white and blue crown patch (diadem)
  • Primary Diet: Primarily Frugivore
  • Range: Southeastern Brazil, eastern Paraguay, and northeastern Argentina
  • Habitat: Montane Atlantic Forest, forest edges, and secondary growth
  • Social Structure: Usually seen in pairs or small groups
  • Nesting/Breeding: Open cup nest in a tree fork
  • Conservation Status: Least Concern (LC)
  • Population Trend: Stable

The Diademed Tanager (*Stephanophorus diadematus*) is a dazzling jewel of the South American cloud forests, instantly recognizable by its striking, regal appearance. This medium-sized songbird boasts a deep violet-blue body that contrasts vividly with its most unique feature: a brilliant, crimson-red crown that resembles a bejeweled diadem, extending from the forehead to the nape. Its black face mask and throat further accentuate the glowing headpiece, while a white patch on the wing adds a flash of contrast in flight. A special adaptation is its thick, slightly hooked bill, perfectly suited for plucking fruits and berries, making it a key seed disperser in its high-altitude Andean habitat. With its vivid colors and commanding crest, the Diademed Tanager is truly a living gem, often described as one of the most beautiful tanagers in the world.

Fun Facts

The Diademed Tanager gets its regal name from a shimmering, sapphire-blue “crown” of feathers that can be raised or flattened like a mood ring, often flaring during territorial displays. Despite its vivid colors, it’s surprisingly reclusive and will freeze motionless for minutes when startled, blending into the dappled light of the Andean cloud forest. It has a quirky habit of hanging upside-down from mossy branches to pry off bark and lichen, using its stout, hooked bill like a crowbar to extract hidden insects.

Habitats & Distribution

The Diademed Tanager is found in the Atlantic Forest of southeastern South America, primarily in southeastern Brazil, eastern Paraguay, and far northeastern Argentina. Its habitat is closely tied to humid, montane forests, typically occurring at elevations between 500 and 2,200 meters. It inhabits the interior and edges of mature forest, as well as secondary growth, clearings with scattered trees, and sometimes adjacent coffee plantations or gardens, preferring areas with dense understory and abundant epiphytes.

Behaviours & Reproduction

The Diademed Tanager is generally observed in pairs or small family groups during the breeding season, though it may join mixed-species flocks outside of this period. Mating appears to be monogamous, with courtship involving mutual preening and the male performing a slow, fluttering display flight while singing to the female. The species builds a cup-shaped nest of moss and plant fibers, typically placed in a tree fork. The female lays two to three eggs and incubates them alone, but both parents actively feed the chicks. A unique aspect of their reproduction is the extended period of parental care, where juveniles often remain with the adults for several weeks after fledging, possibly aiding in the defense of the territory or learning foraging techniques. There is no evidence of cooperative breeding or brood parasitism in this species.

Diet

The Diademed Tanager is primarily frugivorous, with fruits and berries forming the bulk of its diet, which it forages for in the mid to upper canopy of humid montane forests. Interestingly, it also supplements its fruit intake with a significant amount of animal protein, actively hunting for insects such as beetles, caterpillars, and spiders, often by gleaning them from leaves and branches or catching them in mid-air during short sallies. A notable behavioral fact is that this species will occasionally visit bamboo thickets to feed on small arthropods and seeds, and it is known to join mixed-species foraging flocks, where it can exploit a wider variety of food sources by following other birds to disturbed insect prey.

Colors

The Diademed Tanager has a deep violet-blue body with a striking white crown patch atop its head, bordered by a thin black line. Its most unique feature is the bright crimson-red nape and upper back, contrasting with the blue. The wings and tail are blackish with blue edging, and the underparts are a paler violet-blue. There are no camouflage adaptations; its vivid coloration is for display.

Distribution Map

Places linked to this species. A sighting is never guaranteed.

Use the map filter to show only featured places.

Featured places