Articles on this page are available in 1 other language: Spanish (7) (learn more)

Overview

Distribution

Geographic Range

Ramphastos swainsonii can be found within Central America and the Northwestern coast of South America. This species' home extends as far north as south-east Honduras and continues southward into Venezuela and eastern Ecuador. Commonly found in the Magdalena basin which extends from the west coast of Colombia to east Ecuador and North east to Honduras (Meyer de Shavensee 1964; Gould 1972).

Biogeographic Regions: neotropical (Native )

Creative Commons Attribution Non Commercial Share Alike 3.0 (CC BY-NC-SA 3.0)

© The Regents of the University of Michigan and its licensors

Source: Animal Diversity Web

Trusted

Article rating from 0 people

Average rating: 2.5 of 5

Physical Description

Morphology

Physical Description

Along with Ramphastos sulfuratus (keel-billed toucan), the adult R. swainsonii (chesnut-mandibled toucan) is one of the largest toucans. The male grows to be as large as 55-60 cm and the female reaches 50-53 cm. The beak alone can reach up to 15-20 cm depending on sex and age. Like many toucans this bird is brightly colored. The main color is black with patches of different hues on the body. The hindneck and upper back are a shade of maroon. It has a yellow "bib" on the throat and chest area which is bordered on the bottom by a narrow white line, followed by a red band. The rump of the bird is white with a red crissum--the feathers or area surrounding a bird's cloacal opening. The area around the eye is a yellowish-green and the iris is olive. The bill is also colorful. The base of the bill is dark red becoming blackish toward the tip on the lower mandible, on the maxilla, it is sulfur-yellow. The legs are bright blue. The young chesnut-mandibled toucan is not as brightly colored. It is a sooty black with a duller yellow "bib," and a paler red crissum (Meyer de Schavensee 1964; Skutch & Stiles 1989).

Range mass: 580 to 750 g.

Creative Commons Attribution Non Commercial Share Alike 3.0 (CC BY-NC-SA 3.0)

© The Regents of the University of Michigan and its licensors

Source: Animal Diversity Web

Trusted

Article rating from 0 people

Average rating: 2.5 of 5

Ecology

Habitat

Habitat and Ecology

Systems
  • Terrestrial
  • Freshwater
Creative Commons Attribution Non Commercial Share Alike 3.0 (CC BY-NC-SA 3.0)

© International Union for Conservation of Nature and Natural Resources

Source: IUCN

Trusted

Article rating from 0 people

Average rating: 2.5 of 5

Habitat

This toucan is distrubuted among humid and wet forest and forest boundaries. It tends to occupy the canopies of the tropical forests and is also known to fly among the clearings or semi-open areas among the trees (Brown & Hilty, 1986; Slud, 1964).

Terrestrial Biomes: forest ; rainforest

Creative Commons Attribution Non Commercial Share Alike 3.0 (CC BY-NC-SA 3.0)

© The Regents of the University of Michigan and its licensors

Source: Animal Diversity Web

Trusted

Article rating from 0 people

Average rating: 2.5 of 5

Trophic Strategy

Food Habits

Ramphastos swainosonii is primarily frugivorous. However, its diet is also supplemented with insects, occasional snakes and lizards and other nestling birds. It holds larger items beneath its foot while tearing it apart. Although the purpose of the large bill is not completely understood, it is helpful for seizing all types of food from fruit to insects (Skutch & Stiles 1989).

Creative Commons Attribution Non Commercial Share Alike 3.0 (CC BY-NC-SA 3.0)

© The Regents of the University of Michigan and its licensors

Source: Animal Diversity Web

Trusted

Article rating from 0 people

Average rating: 2.5 of 5

Associations

Known prey organisms

Ramphastos swainsonii preys on:
Tyrannus melancholicus

This list may not be complete but is based on published studies.
Creative Commons Attribution 3.0 (CC BY 3.0)

© SPIRE project

Source: SPIRE

Trusted

Article rating from 0 people

Average rating: 2.5 of 5

Life History and Behavior

Reproduction

Reproduction

Like many toucan species, R. swainsonii builds its nest in cavities in trees. These cavities are either the result of decay or an old woodpecker hole in a large dead tree. The breeding season is known to occur from early April to early June. The incubation period can last 17-19 days, and the fledging period can last 5-6 weeks. Around 9 weeks of age the juveniles are self-feeding (Brown & Hilty 1986; Skutch & Stiles 1989).

Creative Commons Attribution Non Commercial Share Alike 3.0 (CC BY-NC-SA 3.0)

© The Regents of the University of Michigan and its licensors

Source: Animal Diversity Web

Trusted

Article rating from 0 people

Average rating: 2.5 of 5

Conservation

Conservation Status

IUCN Red List Assessment


Red List Category
LC
Least Concern

Red List Criteria

Version
3.1

Year Assessed
2009

Assessor/s
BirdLife International

Reviewer/s
Bird, J., Butchart, S.

Contributor/s

Justification
This species has a very large range, and hence does not approach the thresholds for Vulnerable under the range size criterion (Extent of Occurrence <20,000 km2 combined with a declining or fluctuating range size, habitat extent/quality, or population size and a small number of locations or severe fragmentation). Despite the fact that the population trend appears to be decreasing, the decline is not believed to be sufficiently rapid to approach the thresholds for Vulnerable under the population trend criterion (>30% decline over ten years or three generations). The population size has not been quantified, but it is not believed to approach the thresholds for Vulnerable under the population size criterion (<10,000 mature individuals with a continuing decline estimated to be >10% in ten years or three generations, or with a specified population structure). For these reasons the species is evaluated as Least Concern.

History
  • 2008
    Least Concern
  • 2004
    Least Concern
Creative Commons Attribution Non Commercial Share Alike 3.0 (CC BY-NC-SA 3.0)

© International Union for Conservation of Nature and Natural Resources

Source: IUCN

Trusted

Article rating from 0 people

Average rating: 2.5 of 5

Conservation Status

Although R. swainsonii has no special status, there is always some risk. Industrialization of cities and habitat destruction puts this species at some risk.

US Federal List: no special status

CITES: no special status

IUCN Red List of Threatened Species: least concern

Creative Commons Attribution Non Commercial Share Alike 3.0 (CC BY-NC-SA 3.0)

© The Regents of the University of Michigan and its licensors

Source: Animal Diversity Web

Trusted

Article rating from 0 people

Average rating: 2.5 of 5

Population

Population
The global population size has not been quantified, but this species is described as 'fairly common' (Stotz et al. (1996).
Creative Commons Attribution Non Commercial Share Alike 3.0 (CC BY-NC-SA 3.0)

© International Union for Conservation of Nature and Natural Resources

Source: IUCN

Trusted

Article rating from 0 people

Average rating: 2.5 of 5

Relevance to Humans and Ecosystems

Benefits

Economic Importance for Humans: Positive

The beautiful color of this bird makes them excellent displays at zoos. They are also intelligent, playful pets. They are very hardy and easy to manage (Riverbanks Zoo and Botanical Gardens 2001).

Creative Commons Attribution Non Commercial Share Alike 3.0 (CC BY-NC-SA 3.0)

© The Regents of the University of Michigan and its licensors

Source: Animal Diversity Web

Trusted

Article rating from 0 people

Average rating: 2.5 of 5

Wikipedia

Chestnut-mandibled Toucan

The Chestnut-mandibled Toucan, or Swainson’s Toucan (Ramphastos ambiguus swainsonii) is a near-passerine bird which breeds from eastern Honduras to northern Colombia to western Ecuador. This subspecies is replaced from southern Colombia to eastern Peru by the nominate subspecies Black-mandibled Toucan, R. ambiguus ambiguus. The SACC and NACC of the AOU have recently indicated (in 2010) that these birds should be classified as conspecific. The scientific and alternative English names commemorate the English ornithologist and artist William Swainson.

Contents

Description

Like other toucans, the Chestnut-mandibled is brightly marked and has a large bill. The male is 56 cm long, while the smaller female is typically 52 cm long. Weight ranges from 599 to 746 grams (1.3-1.6 lbs).[1]

The sexes are alike in appearance, mainly black with maroon hints to the head, upper back and lower breast. The face and upper breast are bright yellow, with narrow white and broader red lines forming a lower border. The upper tail is white and the lower abdomen is red. The legs are blue. The body plumage is similar to that of the smaller Keel-billed Toucan, but the bill pattern is quite different, being diagonally divided into bright yellow and maroon.

Juvenile birds are sooty-black, and have duller plumage, particularly with respect to the bib, red border, and lower mandible. They are fed by the parents for several weeks after leaving the nest.

The call of the Chestnut-mandibled Toucan is a yelping yo-YIP, a-yip, a-yip, or a Dios te dé, Dios te dé (Spanish for "God give you..."). It is given to maintain contact as the flock travels in "follow-my-leader" style through the trees, but also in chorus at the evening roosts.

Behavior

Small flocks, usually consisting of 3-12 birds, move through the forest with an undulating flight, rarely travelling more than 100 m at a time. This species is primarily an arboreal fruit-eater, but will also take insects, lizards, eggs, and frogs. Flocks will follow Keel-billed Toucans to exploit their sources of food.

Reproduction

Juvenile in Panama

The Chestnut-mandibled Toucan is a resident breeder in moist lowland forest. The 2-4 white eggs are laid in an unlined cavity high in a decayed section of a living tree, or occasionally in an old woodpecker nest in a dead tree.

Both sexes incubate the eggs for at 14–15 days, and the toucan chicks remain in the nest after hatching. They are blind and naked at birth, and have short bills and specialised pads on their heels to protect them from the rough floor of the nest. They are fed by both parents, and fledge after about 6 weeks.

Aviculture

Chestnut-mandibled Toucans are sometimes kept as pets. They are the most readily-available 'large toucan' species available in aviculture in the USA, however they are considered to be noisy, when compared to other toucans.[2] It is illegal to take toucans or any other protected wild bird species from their nests.

References

  1. ^ http://www.nashvillezoo.org/piciformes/ramphastidae.htm
  2. ^ Summers, Amado. "Toucans!". Organization of Professional Aviculturists, Inc.. http://www.proaviculture.com/toucans.htm. Retrieved 19 May 2010. 
Creative Commons Attribution Share Alike 3.0 (CC BY-SA 3.0)

 

Source: Wikipedia

Unreviewed

Article rating from 0 people

Average rating: 2.5 of 5

Disclaimer

EOL content is automatically assembled from many different content providers. As a result, from time to time you may find pages on EOL that are confusing.

To request an improvement, please leave a comment on the page. Thank you!