Red-necked Tanager

Quick Facts

  • Scientific Name: Tangara cyanocephala
  • Spanish Name: Tangara cuellirroja
  • Family: Thraupidae
  • Known Nicknames: Red-necked Tanager, Blue-headed Tanager
  • Average Length: 13.5 cm / 5.3 in
  • Average Weight: 18–22 g / 0.63–0.78 oz
  • Wingspan: N/A
  • Key Feature: Bright red nape and throat contrasting with a blue head and green body
  • Primary Diet: Primarily Frugivore
  • Range: Southeastern Brazil, eastern Paraguay, and northeastern Argentina
  • Habitat: Atlantic Forest, humid montane and lowland forests, forest edges, and clearings
  • Social Structure: Highly Social
  • Nesting/Breeding: Open cup nest in tree fork or shrub
  • Conservation Status: Least Concern (LC)
  • Population Trend: Stable

The Red-necked Tanager (*Tangara cyanocephala*) is a dazzling jewel of the Atlantic Forest, renowned for its striking tricolor plumage: a brilliant turquoise-blue head and throat contrast vividly with a deep crimson-red nape and upper back, while the rest of the body is a rich, glossy black. A unique characteristic is the subtle sexual dimorphism, as females have a slightly duller, more greenish-blue head than the males' electric blue. This small, active bird is further distinguished by its specialized bill, perfectly adapted for plucking small fruits and insects from epiphytes and foliage, often foraging in noisy, mixed-species flocks. Its bright, metallic chattering calls add to its engaging presence, making it a highly sought-after species for birdwatchers exploring its dwindling forest habitat.

Fun Facts

Despite its vivid red, blue, and green plumage, the Red-necked Tanager has a peculiar habit of sunbathing with its wings spread and bill agape, a behavior thought to dislodge feather parasites or regulate body temperature. It also engages in a quirky "anting" ritual, where it deliberately rubs ants over its feathers to harness the formic acid as a natural insecticide. Unique among many tanagers, it is known to occasionally drink nectar by piercing the base of flowers with its sharp beak, a technique called "nectar robbing," bypassing the pollination process entirely.

Habitats & Distribution

The Red-necked Tanager is found along the Atlantic Forest region of eastern Brazil, ranging from the state of Bahia south to Santa Catarina and northeastern Rio Grande do Sul. Its primary habitat consists of humid, montane and lowland forests, including both primary and mature secondary growth, as well as forest edges and clearings with scattered trees. It is most common in areas with dense canopy cover and abundant epiphytes, typically between sea level and about 1,200 meters in elevation.

Behaviours & Reproduction

Red-necked Tanagers are highly social, typically found in small, loose flocks that forage together in the canopy. Their breeding behavior is monogamous, with pairs forming strong bonds during the reproductive season. Mating involves mutual displays where both sexes fluff their feathers, bow, and engage in soft, chattering calls. The female builds a cup-shaped nest from moss and plant fibers, usually in a tree fork, but both parents share incubation duties for about two weeks. A unique strategy is their reliance on cooperative feeding: after hatching, the male and sometimes other flock members assist in provisioning the altricial chicks, which fledge around 15-18 days. They do not exhibit brood parasitism or elaborate courtship rituals beyond these synchronized displays.

Diet

The Red-necked Tanager is primarily frugivorous, with fruits and berries making up the vast majority of its diet, often taken from a wide variety of trees and shrubs in the Atlantic Forest canopy. An interesting aspect of its feeding behavior is its strong attraction to mistletoe berries, which it consumes in large quantities, acting as a key seed disperser for this parasitic plant. While fruits dominate, it also actively forages for small insects, spiders, and other arthropods, particularly during the breeding season when protein is crucial for chick development, and it is known to join mixed-species flocks to glean these prey items from foliage and bark.

Colors

The Red-necked Tanager has a vibrant turquoise-blue head, a bright red patch on the nape and upper back, and a black mask around the bill and eyes. Its underparts are pale greenish-yellow, while the wings and tail are black with blue-green edges. It lacks camouflage adaptations, instead relying on conspicuous, contrasting colors for social signaling in the canopy.