Green-billed Toucan

Ramphastos dicolorus

Foz Do Iguaçu Paraná Brazil

Quick Facts

  • Scientific Name: Ramphastos dicolorus
  • Spanish Name: Tucán de pico verde
  • Family: Ramphastidae
  • Known Nicknames: Red-breasted Toucan, Green-billed Toucan
  • Average Length: 40–50 cm / 16–20 in
  • Average Weight: 265–400 g / 9.3–14.1 oz
  • Wingspan: 50–60 cm / 20–24 in
  • Key Feature: Pale greenish-yellow bill and extensive red plumage on the lower breast and abdomen
  • Primary Diet: Primarily Frugivorous (Fruits, berries, insects, and occasionally small vertebrates)
  • Range: Southern and Eastern Brazil, Eastern Paraguay, and Northeastern Argentina
  • Habitat: Atlantic Forest, moist lowland forests, and montane forests up to 2,000 meters
  • Social Structure: Small groups or pairs
  • Nesting/Breeding: Tree hollows and abandoned woodpecker cavities
  • Statut de conservation : Préoccupation mineure (LC)
  • Population Trend: Decreasing

The Green-billed Toucan (*Ramphastos dicolorus*), also known as the Red-breasted Toucan, is a vibrant and charismatic inhabitant of the Atlantic Forest in South America. As the smallest member of the *Ramphastos* genus, it is easily identified by its namesake pale greenish-yellow beak, which is shorter and more delicately colored than those of its larger cousins. Its striking plumage features a sleek black body contrasted by a brilliant orange-yellow throat and a vivid crimson patch across its belly, giving it a fiery appearance amidst the forest canopy. Beyond its stunning aesthetics, this toucan possesses specialized serrations along the edges of its bill that function like a saw for gripping tropical fruits and small prey. Known for its high-pitched, rhythmic croaking, this social bird is a vital seed disperser, playing a crucial role in maintaining the biodiversity of its lush woodland home.

Faits amusants

The Green-billed Toucan is the smallest member of the *Ramphastos* genus and uses its vibrant beak as a sophisticated thermal radiator to shed excess body heat. These social birds are known for "fencing," a playful behavior where they clatter their bills together like wooden swords. To conserve space and stay warm while sleeping, they perform a quirky anatomical feat by folding their tails flat against their backs and tucking their beaks into their plumage, transforming into a tight ball of feathers. Additionally, they are expert jugglers, frequently tossing berries into the air to catch them deep in their throats.

Habitats et répartition

Its geographical range extends across southern and eastern Brazil, eastern Paraguay, and the Misiones province of northeastern Argentina. Within these regions, it primarily inhabits the Atlantic Forest, as well as gallery forests and moist montane environments. It is notably more tolerant of cooler temperatures than other members of its genus, frequently occurring in high-altitude forests up to 2,000 meters above sea level. While it prefers primary forest canopies, it can also be found in mature secondary forests and occasionally in semi-open wooded areas. Its distribution is largely tied to the availability of fruit-bearing trees, which provide both its primary food source and the hollow tree cavities necessary for nesting.

Comportements & Reproduction

These birds typically live in pairs or small family groups, though they may gather in larger numbers at abundant food sources. During the breeding season, they exhibit territorial behavior and engage in elaborate courtship rituals, most notably ritualized fruit-tossing where partners pass food back and forth to strengthen their monogamous bond. Mutual preening is also a common social behavior used to maintain these long-term partnerships. Reproduction occurs within high tree cavities, often utilizing abandoned woodpecker holes or natural hollows. The female typically lays two to four eggs, with both parents sharing incubation duties for approximately 16 to 19 days. After hatching, the altricial chicks are cared for by both adults, who provide a diet of fruit supplemented by occasional insects. The young remain in the nest for six to nine weeks, benefiting from biparental care until they are ready to fledge.

Alimentation

The Green-billed Toucan is primarily a frugivorous bird, consuming a wide variety of tropical fruits, particularly those from palm trees and figs found within its Atlantic Forest habitat. While fruit makes up the bulk of its sustenance, this species is also an opportunistic feeder that supplements its diet with animal protein, including insects, spiders, and occasionally small vertebrates like lizards or the eggs and nestlings of other birds. One of the most fascinating aspects of its feeding behavior is how it utilizes its oversized, serrated bill to delicately pluck fruit from thin branches that would otherwise be inaccessible to heavier birds. Furthermore, the toucan plays a vital ecological role as a seed disperser; it typically swallows fruits whole and later regurgitates the larger seeds undamaged, helping to propagate the diverse flora of the South American rainforests.

Couleurs

The Green-billed Toucan is characterized by its primarily black plumage contrasted by a vivid yellow-orange throat and a bold red patch on the lower breast and belly. Its namesake bill is a pale lime-green, often featuring a reddish base, while the bare skin surrounding the eyes is a striking turquoise or blue. These bright markings serve as social signals, while the dark dorsal feathers provide effective camouflage against the shadowed foliage of the Atlantic Forest canopy.