Animal
Toco toucan
The toco toucan is a black and white bird with a giant orange beak. It eats fruit and lives in South America.
The toco toucan is the biggest toucan, and its huge orange bill is the largest of any bird compared with its body. The bill is light and hollow. It is a tool for picking fruit, and scientists have found it also works like a radiator that lets out body heat. Tocos live in open woodlands and savannas of South America.
Ramphastos toco, the largest member of the toucan family Ramphastidae, has the largest bill relative to body size of any bird: about a third of its length but only a twentieth of its mass. A fruit-eater of South American savannas and open woodlands, it disperses seeds, including those of the manduvi tree, and research has shown its bill works as an adjustable heat radiator.
Photo: © Giles Laurent, gileslaurent.com, License CC BY-SA, CC BY-SA 4.0, via Wikimedia Commons
Meet the toco toucan
The toco toucan has a giant beak.
The beak is orange and yellow with a black tip. Its body is black and its throat is white. It has a bright blue ring around each eye.
The toco toucan is the largest of all toucans, about 61 centimeters long, and a third of that is beak. It has a glossy black body, a white throat and a bright orange bill with a black tip.
That giant bill looks heavy, but it is not. It is hollow inside, made of keratin like your fingernails, and held together by a light framework of bony fibers. The whole bill is only about one twentieth of the bird's weight.
Ramphastos toco is the largest member of the toucan family (Ramphastidae), in the same order as woodpeckers (Piciformes). Adults average about 61 centimeters and weigh about 592 to 760 grams; males are larger than females.
The bill makes up about a third of total length but only about a twentieth of body mass. Its keratin sheath covers a hollow interior braced by a criss-cross network of thin bony struts, and its edges are serrated. What looks like a blue iris is actually a ring of bare blue skin around the eye, surrounded by a second ring of orange skin. Juveniles are duller, with shorter, stubbier bills.
Quick facts
- Group
- Bird
- Length
- 0.61 m
- Weight
- 0.59 to 0.76 kg
- Lifespan in the wild
- 20 to 26 years
Where it lives
Toco toucans live in South America.
They like open places with lots of trees, like grassy savannas and woods. They stay up high in the trees.
Toco toucans live in central and eastern South America: in Brazil, Bolivia, Paraguay, Argentina, Uruguay, Peru and the Guianas. They are most often found in semi-open country with scattered trees, such as savannas, dry woodlands, gallery forests along rivers and even plantations.
In Brazil they are common in the cerrado, a vast tropical savanna. Tocos move around a lot, following trees as their fruit ripens.
The IUCN lists the species as native to Argentina, Bolivia, Brazil, French Guiana, Guyana, Paraguay, Peru, Suriname and Uruguay, from sea level to about 1,890 meters. Animal Diversity Web describes it as a bird of dry, semi-open habitats: woodland, savanna, plantations and gallery forest along rivers, and notably the Brazilian cerrado.
Its wide range has been linked to the availability of fleshy fruits. Animal Diversity Web describes tocos as very mobile and nomadic, with wide home ranges whose exact size is unknown.
Continent
Its habitats
Where can you find this animal?
- Lives here naturally · Countries and seas named by a scientific source
- Sightings recorded · Records of wild sightings (GBIF)
Lives here naturally · Countries and seas named by a scientific source
Savanna, open woodland, gallery forest and plantations in central and eastern South America, especially Brazil's cerrado. It also lives in French Guiana, which this map shows as part of France.
Places: Argentina, Bolivia, Brazil, Guyana, Paraguay, Peru, Suriname and Uruguay.
Source: iucn-red-list · checked October 2026
Sightings recorded · Records of wild sightings (GBIF)
Counts of GBIF records of wild observations (human and machine) and preserved specimens. Records include introduced populations, vagrants, escaped or released animals and misidentifications, so a country with records is not necessarily part of the native range.
Wild sightings have been recorded in Brazil, Argentina, Bolivia, Paraguay, Guyana, Suriname, United States, Uruguay and 11 more places.
Source: gbif · checked October 2026
Range maps show where scientists say an animal lives, often country by country. An animal may live in only part of a country shown, and sightings records can include animals that wandered far from home.
A fruit-eater with a long reach
Toucans mostly eat fruit.
They pick fruit with the tip of their long beak. Then they toss it in the air and catch it in their mouth!
Toco toucans eat mostly fruit, such as figs and the fruits of genipapo and cecropia trees. Their long bill lets them reach into tree holes and grab fruit from the branches around them. They also snap up insects and sometimes take eggs from other birds' nests.
Toucans swallow in an unusual way. A toco holds the fruit at the very tip of its bill, then flicks its head back so the food drops straight down its throat.
Tocos are canopy frugivores but opportunistic, also taking insects and the eggs of other birds, including those of the hyacinth macaw, which the IUCN lists as Vulnerable. Recorded food plants include genipapo (Genipa americana), figs (Ficus) and pumpwood (Cecropia pachystachya).
Animal Diversity Web notes that tocos do not use the tongue to swallow. Instead the bird holds a piece of fruit at the bill tip and tilts its head sharply back, sending the food directly into the throat. The toucan tongue itself is long, narrow and feather-like, with bristles along the sides that help handle and taste food.
The amazing bill
The toucan's big beak is very light.
It helps the toucan pick fruit. It also helps the toucan cool down on a hot day.
Scientists have had many different ideas about what the toucan's giant bill is for. It is certainly a fruit-picking tool, and pairs use it to toss fruit to each other when courting.
In 2009 scientists discovered another job: the bill is a radiator. The toucan can change how much blood flows into its bill, so the bill can let body heat escape into the air, a bit like an elephant's ears. Toucans also have feet with two toes forward and two back for gripping branches.
Suggested explanations for the bill, San Diego Zoo notes, include reaching food on thin branches, attracting mates and scaring off predators or competitors. In 2009 Tattersall, Andrade and Abe showed that toco toucans regulate heat loss by changing blood flow to the bill, using it as a temporary heat radiator. Relative to its size, they reported, it is one of the largest 'thermal windows' in the animal kingdom, rivaling elephants' ears in its ability to radiate body heat.
Like woodpeckers and parrots, toucans are zygodactyl, with two toes forward and two back, which gives a stable grip in branches and cavities. When roosting in a tree hole, a toucan turns its head back, lays its bill along its back under a wing and flips its tail up over its head.
Growing up
Toucans lay eggs in a hole in a tree.
Mom and dad take turns keeping the eggs warm. Baby toucans hatch with no feathers and their eyes shut.
Toco toucans breed once a year, in spring. They nest in a hollow in a tree, where the female lays two to four shiny white eggs. Both parents take turns keeping them warm for 15 to 18 days.
The chicks hatch bare-skinned, with closed eyes, and depend completely on their parents. At about three weeks their eyes open and feathers start to appear. They leave the nest at six to eight weeks, but their famous bills take longer to grow. They are grown up at three to four years.
Pairs are monogamous and breed once a year in spring, laying a single clutch of two to four eggs in a tree cavity. Both sexes incubate for about 15 to 18 days.
Hatchlings are altricial, naked and blind. According to San Diego Zoo, eyes open and feathers begin to grow at about three weeks; nestlings fledge at six to eight weeks, when the characteristic bill is developing. Sexual maturity comes at three to four years. Animal Diversity Web reports a typical wild lifespan of about 20 years and a maximum recorded age of 26.
Croaks, clacks and seed planting
Toucans live in small groups.
They croak loudly and clack their beaks. When toucans eat fruit, they drop the seeds in new places. New trees can grow!
Toco toucans live in small, noisy flocks, often of about six birds. They call to each other with deep, croaking sounds and rattles, and they make clacking sounds with their bills. Pairs court by tossing fruit back and forth.
Toucans help plant trees. They carry the seeds of the fruit they eat and drop them in new places, where they can grow. One of those trees, the manduvi, is where hyacinth macaws nest, so even the macaws depend on toucans.
Tocos are social and highly mobile, moving in flocks of around six as fruit supplies change. Their repertoire includes a repeated deep croak and a rattling call, supplemented by bill-clacking. Courtship is initiated with a fruit toss between partners.
They are also seed dispersers. Animal Diversity Web describes a two-way link with another bird: tocos prey on hyacinth macaw eggs, but they also disperse the seeds of the manduvi tree, whose cavities the macaws use for almost all their nests. Predators of tocos include jaguars, snakes, coatis and eagles.
Did you know?
The name 'toucan' comes from the bird's call.
The word 'toucan' comes from the sound the bird makes. Its calls can sound like croaking frogs.
San Diego Zoo notes that the name 'toucan' derives from the birds' calls; tocos give deep croaks and rattles and clack their bills.
Is it in danger?
Toco toucans are not in danger.
But some of their trees are being cut down. Some people also catch toucans to keep as pets.
The IUCN Red List rates the toco toucan Least Concern. Animal Diversity Web explains that it has a broad range and is fairly common. It lives in open country and even plantations, as well as woodland.
Still, toucans face problems. San Diego Zoo says the biggest threat to toucans is habitat loss, as land is cleared for roads, farms and buildings, and some toucans are caught for the pet trade. International trade in toco toucans is controlled under an agreement called CITES.
The global assessment (IUCN, 2025) lists Ramphastos toco as Least Concern; Animal Diversity Web attributes this to its broad range and fairly common status in its habitats, which include plantations as well as savanna and woodland.
The species is on CITES Appendix II, which regulates international trade. San Diego Zoo identifies habitat loss as the main threat to toucans in general, along with capture for the pet trade and hunting in some regions.
IUCN Red List
How is the toco toucan doing in the wild?
- Least Concern (this animal)
- Near Threatened
- Vulnerable
- Endangered
- Critically Endangered
- Extinct in the Wild
- Extinct
Least Concern
Not at risk of disappearing from the wild right now.
See the IUCN Red List assessment · The IUCN Red List of Threatened Species 2021.3
Amazing facts
-
A toucan sleeps with its beak tucked on its back.
To sleep in a tree hole, a toucan lays its bill along its back and folds its tail over its head, turning into a neat ball of feathers.
Roosting toucans rotate the head to rest the bill along the back under a wing and flip the tail forward over the head.
-
The name 'toucan' comes from the bird's call.
The word 'toucan' comes from the sound the bird makes. Its calls can sound like croaking frogs.
San Diego Zoo notes that the name 'toucan' derives from the birds' calls; tocos give deep croaks and rattles and clack their bills.
-
The toucan's beak is light, like a straw.
A toco's bill is a third of its length but only a twentieth of its weight, because it is hollow inside.
Animal Diversity Web gives the bill as about one third of total length and one twentieth of body mass.
-
Toucans throw fruit to each other.
Toco toucan pairs court by tossing fruit back and forth with their bills.
Courtship is initiated by a fruit toss between prospective mates.
Words to know
- frugivore
- an animal that eats mostly fruit
- keratin
- the tough material that makes hair, nails, horns and beaks
- savanna
- a warm, grassy land with scattered trees
- seed disperser
- an animal that carries seeds to new places where they can grow
- radiator
- something that lets heat flow out into the air
- cerrado
- a huge tropical savanna in Brazil
Discovery challenge
-
Is a toucan's big beak heavy or light?
Why is a toucan's huge bill so light?
Why is the toco toucan's bill so light for its size?
- Light, because it is hollow
- Heavy, because it is solid rock
- Heavy, because it is full of water
Show the answer
Light, because it is hollow
The beak is hollow, so it is very light.
It is hollow inside, made of keratin with a light framework of bony fibers.
A keratin sheath over a hollow interior braced by criss-cross bony struts, about a twentieth of body mass.
-
How does the beak help a hot toucan?
What did scientists discover about the toucan's bill in 2009?
What did a 2009 study reveal about the toucan bill?
- It lets heat out to cool it down
- It stores water
- It makes the toucan fly faster
Show the answer
It lets heat out to cool it down
The beak lets heat out, so the toucan cools down.
The toucan changes the blood flow to its bill to let heat escape, like an elephant's ears.
Changing the blood flow to the bill lets it act as a transient thermal radiator.
-
What do toucans mostly eat?
What is the toco toucan's main food?
What makes up most of a toco toucan's diet?
- Fruit
- Grass
- Fish
Show the answer
Fruit
Toucans mostly eat fruit.
Mostly fruit, plus insects and sometimes eggs.
Fruit, though tocos are opportunists that also take insects and the eggs of other birds.
-
Where do toco toucans live?
On which continent do toco toucans live?
On which continent is the toco toucan native?
- South America
- Europe
- Antarctica
Show the answer
South America
They live in South America.
They live in central and eastern South America, especially Brazil.
South America, in semi-open habitats such as savanna, open woodland and gallery forest, notably Brazil's cerrado.
Places where you might see it
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For parents & teachers
What children will learn
- Describe the toco toucan's bill and how it can be large yet light.
- Explain how the bill helps with feeding, courtship and cooling.
- Describe the toucan's life cycle and its role as a seed disperser.
- Locate the toco toucan's range in South America.
Recommended ages: 3 to 17 · About 15 minutes
Talk about it
- Why might a bird benefit from a bill that can lose heat?
- How can one animal both harm and help another species, like toucans and hyacinth macaws?
- If you could have any bird's beak for a day, which would you choose and why?
Try at home or in class
- Compare the weight of a solid block and a hollow box of the same size to see why a hollow bill is light.
- Hold a grape at the tip of a pair of tongs and try to 'toss' it into a cup, like a toucan swallowing fruit.
Key vocabulary: frugivore, keratin, savanna, seed disperser, radiator, cerrado
Where these facts come from
- The IUCN Red List of Threatened Species , International Union for Conservation of Nature (IUCN terms of use (no redistribution of Red List data or range maps))
- GBIF Backbone Taxonomy and GBIF Occurrence Search , Global Biodiversity Information Facility (CC0 1.0 (backbone); occurrence counts are facts derived from records under CC0, CC BY and CC BY-NC)
- Wikidata , Wikimedia Foundation (CC0 1.0)
- Ramphastos toco (Toco Toucan), Red List assessment 2025 , IUCN Red List of Threatened Species
- Ramphastos toco (toco toucan) , Animal Diversity Web, University of Michigan Museum of Zoology
- Toucan , San Diego Zoo Wildlife Alliance
- Heat exchange from the toucan bill reveals a controllable vascular thermal radiator (Tattersall, Andrade and Abe, Science 2009) , PubMed, U.S. National Library of Medicine
- Wikimedia Commons , Wikimedia Foundation (Per file: Public domain, CC0, CC BY or CC BY-SA only (credited on each page))
Checked, not yet human-reviewed. Last updated October 24, 2026. Spotted a mistake? Tell us.
Picture and 3D model credits
- Photo: © Giles Laurent, gileslaurent.com, License CC BY-SA, CC BY-SA 4.0, via Wikimedia Commons · source · license
- Photo: Bernard DUPONT from FRANCE, CC BY-SA 2.0, via Wikimedia Commons · source · license
- Photo: Giles Laurent, CC BY-SA 4.0, via Wikimedia Commons · source · license
- 3D model: iRahulRajput, CC BY 4.0, via Sketchfab · source · license