Keel-billed toucan | |
---|---|
in Costa Rica | |
Scientific classification | |
Domain: | Eukaryota |
Kingdom: | Animalia |
Phylum: | Chordata |
Class: | Aves |
Order: | Piciformes |
Family: | Ramphastidae |
Genus: | Ramphastos |
Species: | R. sulfuratus |
Binomial name | |
Ramphastos sulfuratus Lesson, 1830 | |
Subspecies | |
See text | |
The keel-billed toucan (Ramphastos sulfuratus), also known as sulfur-breasted toucan, keel toucan, or rainbow-billed toucan, is a colorful Latin American member of the toucan family. It is the national bird of Belize. [3] The species is found in tropical jungles from southern Mexico to Ecuador. It is an omnivorous forest bird that feeds on fruits, seeds, insects, invertebrates, lizards, snakes, and small birds and their eggs. [4]
Two subspecies are recognized: [5]
Image | Subspecies | Distribution |
---|---|---|
Ramphastos sulfuratus sulfuratus – Lesson, 1830 | Found in south-eastern Mexico, Belize and northern Guatemala | |
Ramphastos sulfuratus brevicarinatus – Gould, 1854 | Originally described as a separate species. Found in south-eastern Guatemala to northern Colombia and north-western Venezuela | |
Including its bill, the keel-billed toucan ranges in length from around 42 to 55 cm (17 to 22 in). [6] Their large and colorful bill averages around 12–15 cm (4.7–5.9 in), about one-third of its length. It typically weighs about 380–500 g (13–18 oz). [7] While the bill seems large and cumbersome, it is in fact a spongy, hollow bone covered in keratin, a very light and hard protein.
The plumage of the keel-billed toucan is mainly black with a yellow neck and chest. Molting occurs once per year. [8] It has blue feet and red feathers at the tip of its tail. The bill is mainly green with a red tip and orange sides.
Keel-billed toucans have zygodactyl feet (or feet with toes 2 and 3 facing forwards, and toes 1 and 4 facing backwards) – two toes face forward and two face back. Because toucans spend a large portion of time in the trees, this helps the birds to stay on the branches of the trees and jump from one branch to another.
The keel-billed toucan can be found from Southern Mexico to Venezuela and Colombia. It roosts in the canopies of tropical, subtropical, and lowland rainforests, up to altitudes of 1,900 m (6,200 ft). [9] It roosts in holes in trees, [8] often with several other toucans. This can be very cramped, so the birds tuck their tails and beaks under their bodies to keep their body temperature at a normal level while sleeping. Adding to the lack of space, the bottoms of the holes are often covered with pits from the fruit the toucans have eaten. [8]
Like many toucans, keel-billed toucans are very social birds, rarely seen alone. They fly in small flocks of approximately six to twelve individuals through lowland rainforests. Their flight is slow and undulating, consisting of rapid wing beats (six to ten), then a glide with the bird's beak extending forward and dipping downward as though pulling the rest of the bird. [8] Their feet are drawn up forward in flight. The flight distances are typically short. [8] They live together in groups, often sharing cramped living quarters of holes in trees. There is a family structure within the group. Birds often "duel" with each other using their bills, and throw fruit into each other's mouths. They 'play ball', one throwing a fruit in the air and a second seizing it. [8]
The female keel-billed toucan will lay 1–4 white eggs in a natural or already-made tree cavity. [10] The male and female share in the caring of the eggs, both taking turns incubating. [8] The eggs hatch approximately 15–20 days after being laid. After hatching, the male and female again take turns feeding the chicks. When the chicks hatch, they have no feathers, and have their eyes closed for approximately 3 weeks. The chicks have adequately formed heel pads, which assist on the pit-covered bottom of the nest. [8] The chicks stay in their nest for approximately eight to nine weeks while their bills develop fully and they are ready to fledge from the nest.
The diet of keel-billed toucans consists mostly of a wide range of fruit, [12] but may also include insects, eggs, nestlings and lizards. The bill, surprisingly dexterous, allows this toucan to utilize a large variety of fruit that might not otherwise be reached. When eating the fruit, it uses its bill to dissect the fruit, and then tosses its head back to swallow the fruit whole.
The keel-billed toucan is sometimes kept in captivity, but it requires a high-fruit diet and is sensitive to hemochromatosis (an iron storage disease). [13]
This species is threatened by habitat loss, which has been accelerating in recent years, and by hunting and trapping for the pet trade. The species is undergoing a moderately rapid population decline and is therefore evaluated as Near Threatened. [1]
They are threatened by hunting for their meat and beaks, and toucan populations are on a decreasing trend.
The trogons and quetzals are birds in the order Trogoniformes which contains only one family, the Trogonidae. The family Trogonidae contains 46 species in seven genera. The fossil record of the trogons dates back 49 million years to the Early Eocene. They might constitute a member of the basal radiation of the order Coraciiformes and order Passeriformes or be closely related to mousebirds and owls. The word trogon is Greek for "nibbling" and refers to the fact that these birds gnaw holes in trees to make their nests.
Hornbills are birds found in tropical and subtropical Africa, Asia and Melanesia of the family Bucerotidae. They are characterized by a long, down-curved bill which is frequently brightly coloured and sometimes has a horny casque on the upper mandible. Hornbills have a two-lobed kidney. They are the only birds in which the first and second neck vertebrae are fused together; this probably provides a more stable platform for carrying the bill. The family is omnivorous, feeding on fruit and small animals. They are monogamous breeders nesting in natural cavities in trees and sometimes cliffs. A number of mainly insular species of hornbill with small ranges are threatened with extinction, namely in Southeast Asia.
Woodpeckers are part of the bird family Picidae, which also includes the piculets, wrynecks and sapsuckers. Members of this family are found worldwide, except for Australia, New Guinea, New Zealand, Madagascar and the extreme polar regions. Most species live in forests or woodland habitats, although a few species are known that live in treeless areas, such as rocky hillsides and deserts, and the Gila woodpecker specialises in exploiting cacti. Woodpeckers are known as the loudest birds of the forest.
James's flamingo, also known as the puna flamingo, is a species of flamingo that lives at high altitudes in the Andean plateaus of Peru, Chile, Bolivia, and northwest Argentina.
The channel-billed toucan is a near-passerine bird in the family Ramphastidae found on the Caribbean island of Trinidad and in tropical South America as far south as southern Brazil and central Bolivia.
The toco toucan is a species of bird in the toucan family Ramphastidae. It is the largest species of toucan and has a distinctive appearance, with a black body, a white throat, chest and uppertail-coverts, and red undertail-coverts. Its most conspicuous feature is its massive beak, which is yellow-orange with a black base and large spot on the tip. It is endemic to South America, where it has a wide distribution from the Guianas south to northern Argentina and Uruguay, and its range has recently been expanding southwards. Unlike other toucans, which inhabit continuous forests, toco toucans inhabit a variety of semi-open habitats at altitudes of up to 1,750 m. They are especially common in the Brazilian cerrado, gallery forests, and the wetlands of the Pantanal.
The golden-headed quetzal or corequenque is a strikingly coloured bird in the genus Pharomachrus. It is found in moist mid-elevation forests from eastern Panama to northern Bolivia.
The chestnut-mandibled toucan or Swainson's toucan is a subspecies of the yellow-throated toucan which breeds from eastern Honduras to northern Colombia to western Ecuador.
The tawny frogmouth is a species of frogmouth native to the Australian mainland and Tasmania and found throughout. It is a big-headed, stocky bird often mistaken for an owl due to its nocturnal habits and similar colouring.
The white-throated toucan is a near-passerine bird in the family Ramphastidae found in South America throughout the Amazon Basin including the adjacent Tocantins and Araguaia River drainage. It prefers tropical humid forest, but also occurs in woodland and locally in riverine forest within cerrado.
The collared aracari or collared araçari is a near-passerine bird in the toucan family Ramphastidae. It is found from Mexico to Colombia and Venezuela.
The Ramphastos genus, also known as toucans, is a genus of brightly colored, tropical birds that are found throughout Central and South America from Southern Mexico to the southern cone of the South American continent. Toucans are typically characterized by their large, colorful bills, which are used for a variety of functions such as thermoregulation, feeding, and social signaling.
The toucan barbet is a barbet native to western Ecuador and Colombia. Along with the prong-billed barbet, it forms the family Semnornithidae, and is closely related to the toucans. It is a medium-sized barbet with a robust yellow bill. It has striking plumage, having a black head with grey throat and nape, red breast and upper belly, yellow lower belly and grey wings and tail.
The yellow-throated toucan is a Near Threatened species of bird in the family Ramphastidae, the toucans, toucanets, and aracaris. It is found from Honduras south into northern South America and beyond to Peru.
The red-breasted toucan or green-billed toucan is a bird in the family Ramphastidae, the toucans, toucanets, and aracaris. It is found in Argentina, Brazil, Bolivia and Paraguay.
The red-crowned barbet is part of one of the two subfamilies of Megalaimidae birds. it is in the order of woodpeckers (Piciformes) and their relatives. It is distributed in Myanmar, Thailand, Malaysia, Singapore, Indonesia and Brunei. Its natural habitats are subtropical or tropical moist lowland forests and plantations with a distribution area of 3,180,000 km2 (1,230,000 sq mi).
Toucans are Neotropical members of the near passerine bird family Ramphastidae. The Ramphastidae are most closely related to the American barbets. They are brightly marked and have large, often colorful bills. The family includes five genera and over 40 different species.
Tinaminae, the forest tinamous, is one of two subfamilies of the family Tinamidae, the other being Nothurinae.
The citron-throated toucan is a near-passerine bird in the family Ramphastidae, the toucans, toucanets, and aracaris. It is found in Colombia and Venezuela.