The dwarf cassowary (''Casuarius bennetti''), also known as Bennett's cassowary, little cassowary, mountain cassowary or muruk, is the smallest of the three extant species of

cassowaries Cassowaries (; Biak language, Biak: ''man suar'' ; ; Papuan_languages, Papuan: ''kasu weri'' ) are flightless birds of the genus ''Casuarius'', in the order Casuariiformes. They are classified as ratites, flightless birds without a keel (bird a ...

Taxonomy

The scientific name commemorates the

Australian Australian(s) may refer to: Australia * Australia, a country * Australians, citizens of the Commonwealth of Australia ** European Australians ** Anglo-Celtic Australians, Australians descended principally from British colonists ** Aboriginal Aus ...

naturalist George Bennett. He was the first scientist to examine these birds after a few were brought to Australia aboard a ship. Recognising them as a new species of cassowary, he sent specimens back to

England England is a Countries of the United Kingdom, country that is part of the United Kingdom. It is located on the island of Great Britain, of which it covers about 62%, and List of islands of England, more than 100 smaller adjacent islands. It ...

, where other

taxonomist In biology, taxonomy () is the science, scientific study of naming, defining (Circumscription (taxonomy), circumscribing) and classifying groups of biological organisms based on shared characteristics. Organisms are grouped into taxon, taxa (si ...

s confirmed his perception. On the west side of

Cenderawasih Bay Cenderawasih Bay (, "Bird of Paradise Bay"), also known as Sarera Bay () and formerly Geelvink Bay (), is a large bay in northern Province of Papua, Central Papua and West Papua, New Guinea, Indonesia. Geography ''Cenderawasih Bay'' is a lar ...

, western Papua, there is a distinctive form that may merit a split. ''C. papuanus'' is the tentative name. There are two recognized subspecies *''C. b. bennetti'' - found throughout New Guinea except the

Vogelkop Peninsula The Bird's Head Peninsula (Indonesian: , , meaning Bird's Head in Indonesian and Dutch) or Doberai Peninsula (''Semenanjung Doberai'') is a large peninsula that makes up the northwest portion of the island of New Guinea, comprising the Indonesia ...

, as well as

Yapen Island Yapen (also Japen, Jobi) is an island of Papua (province), Papua, Indonesia. The Yapen Strait separates Yapen and the Biak Islands to the north. It is in Cenderawasih Bay off the north-western coast of the island of New Guinea. To the west is ...

and

New Britain New Britain () is the largest island in the Bismarck Archipelago, part of the Islands Region of Papua New Guinea. It is separated from New Guinea by a northwest corner of the Solomon Sea (or with an island hop of Umboi Island, Umboi the Dampie ...

*''C. b. westermanni'' - found on the Vogelkop Peninsula A third subspecies, ''Casuarius bennetti papuanus'', may exist based on a specimen collected in 1875 of unknown origin. This name is sometimes applied to ''C. b. westermanni'' subspecies, and may represent a distinct species, but the taxonomy is still unresolved. The Karam or Kalam people of the

New Guinea Highlands The New Guinea Highlands, also known as the Central Range or Central Cordillera, is a long chain of mountain ranges on the island of New Guinea, including the island's highest peak, Puncak Jaya, Indonesia, , the highest mountain in Oceania. The r ...

classify

bats Bats are flying mammals of the order Chiroptera (). With their forelimbs adapted as wings, they are the only mammals capable of true and sustained flight. Bats are more agile in flight than most birds, flying with their very long spread-out ...

and flying birds as one group, , and the

, very large, wingless, flightless birds as another, . ''Yaket'' are bony with wings and fly in the air, while ''kobtiy'' are bony without wings and are terrestrial and of the forest. They distinguish kobtiy from other bony, wingless animals because kobtiy are not

quadruped Quadrupedalism is a form of locomotion in which animals have four legs that are used to bear weight and move around. An animal or machine that usually maintains a four-legged posture and moves using all four legs is said to be a quadruped (fr ...

al like

dogs The dog (''Canis familiaris'' or ''Canis lupus familiaris'') is a domesticated descendant of the gray wolf. Also called the domestic dog, it was selectively bred from a population of wolves during the Late Pleistocene by hunter-gatherers ...

and

lizard Lizard is the common name used for all Squamata, squamate reptiles other than snakes (and to a lesser extent amphisbaenians), encompassing over 7,000 species, ranging across all continents except Antarctica, as well as most Island#Oceanic isla ...

s and are not limbless like

snake Snakes are elongated limbless reptiles of the suborder Serpentes (). Cladistically squamates, snakes are ectothermic, amniote vertebrates covered in overlapping scales much like other members of the group. Many species of snakes have s ...

s. (See

Kalam languages The Kalam languages are a small family of languages in the Madang subgroup of Papua New Guinea. The languages that make up the family are Kalam, Tai, and Kobon. They are famous for having perhaps the smallest numbers of lexical verb In lingui ...

John Gould John Gould (; 14 September 1804 – 3 February 1881) was an English ornithologist who published monographs on birds, illustrated by plates produced by his wife, Elizabeth Gould (illustrator), Elizabeth Gould, and several other artists, includ ...

first identified the dwarf cassowary from a specimen from

, in 1857.

Description

The dwarf cassowary is a large bird but is smaller than other living cassowaries (the

southern cassowary The southern cassowary (''Casuarius casuarius''), also known as double-wattled cassowary, Australian cassowary, or two-wattled cassowary, is a large Flightless bird, flightless black bird, found in Indonesia, Papua New Guinea, and northeastern ...

and northern cassowary). It is between long and weighs between . It is a flightless bird with hard and stiff black plumage, a low triangular casque, pink cheek and red patches of skin on its blue neck. Compared to other cassowaries, the dwarf cassowary is shorter, with a tarsi length of , with a slightly smaller

bill Bill(s) may refer to: Common meanings * Banknote, paper cash (especially in the United States) * Bill (law), a proposed law put before a legislature * Invoice, commercial document issued by a seller to a buyer * Bill, a bird or animal's beak Pl ...

, at . The feet are large and powerful, equipped with dagger-like claws on the inner toe. Both sexes are similar. Females have longer casques, brighter bare skin colour and are larger in size.

Range and habitat

The dwarf cassowary is

endemic Endemism is the state of a species being found only in a single defined geographic location, such as an island, state, nation, country or other defined zone; organisms that are indigenous to a place are not endemic to it if they are also foun ...

to the montane

cloud forests A cloud forest, also called a water forest, primas forest, or tropical montane cloud forest, is a generally tropical or subtropical, evergreen, montane, moist forest characterized by a persistent, frequent or seasonal low-level cloud cover, ...

and

tropical rainforests Tropical rainforests are dense and warm rainforests with high rainfall typically found between 10° north and south of the Equator. They are a subset of the tropical forest biome that occurs roughly within the 28° latitudes (in the torrid z ...

of the island of

New Guinea New Guinea (; Hiri Motu: ''Niu Gini''; , fossilized , also known as Papua or historically ) is the List of islands by area, world's second-largest island, with an area of . Located in Melanesia in the southwestern Pacific Ocean, the island is ...

(divided between the countries of

Indonesia Indonesia, officially the Republic of Indonesia, is a country in Southeast Asia and Oceania, between the Indian Ocean, Indian and Pacific Ocean, Pacific oceans. Comprising over List of islands of Indonesia, 17,000 islands, including Sumatra, ...

and

Papua New Guinea Papua New Guinea, officially the Independent State of Papua New Guinea, is an island country in Oceania that comprises the eastern half of the island of New Guinea and offshore islands in Melanesia, a region of the southwestern Pacific Ocean n ...

). Though the birds are primarily found on the island of New Guinea proper, they are also known from the

Bismarck Archipelago The Bismarck Archipelago (, ) is a group of islands off the northeastern coast of New Guinea in the western Pacific Ocean and is part of the Islands Region of Papua New Guinea. Its area is about . History The first inhabitants of the archipela ...

(part of Papua New Guinea's

Islands Region The New Guinea Islands Region is one of four regions of Papua New Guinea (PNG), comprising the Bismarck Archipelago and north-western Solomon Islands Archipelago, located north-east of New Guinea island (the mainland). This is the least populo ...

), including the islands of

and New Ireland, as well as

(part of Indonesia's Papua Province), at

elevations The elevation of a geographic ''location'' is its height above or below a fixed reference point, most commonly a reference geoid, a mathematical model of the Earth's sea level as an equipotential gravitational surface (see Geodetic datum § ...

of around above

sea level Mean sea level (MSL, often shortened to sea level) is an mean, average surface level of one or more among Earth's coastal Body of water, bodies of water from which heights such as elevation may be measured. The global MSL is a type of vertical ...

. In areas where dwarf cassowaries do not encounter the northern cassowary (''Casuarius unappendiculatus'') nor the southern (''Casuarius casuarius'') species—i.e., avoiding

interspecific competition Interspecific competition, in ecology, is a form of competition in which individuals of ''different'' species compete for the same resources in an ecosystem (e.g. food or living space). This can be contrasted with mutualism, a type of symbiosis. ...

—they will naturally become more confident and

forage Forage is a plant material (mainly plant leaves and stems) eaten by grazing livestock. Historically, the term ''forage'' has meant only plants eaten by the animals directly as pasture, crop residue, or immature cereal crops, but it is also used m ...

in lowland or open forest areas. The dwarf cassowary's total population is distributed over an area of approximately .

Ecology

The species feeds mainly on fallen fruits or fruits that they pluck from shrubs, and small animals and insects. Dwarf cassowaries use the crest on their head to sort through

leaf litter Plant litter (also leaf litter, tree litter, soil litter, litterfall, or duff) is dead plant material (such as leaves, bark, needles, twigs, and cladodes) that has fallen to the ground. This detritus or dead organic material and its constituen ...

and reveal many sources of food, such as fungi, insects, plant tissue, and small vertebrates, including lizards and frogs. A solitary bird, it pairs only during breeding season. It possibly undertakes seasonal migrations in part of its range.

Conservation

The dwarf cassowary has been classified as

Near Threatened A near-threatened species is a species which has been Conservation status, categorized as "Near Threatened" (NT) by the International Union for Conservation of Nature (IUCN) as that may be vulnerable to Endangered species, endangerment in the ne ...

by the

IUCN The International Union for Conservation of Nature (IUCN) is an international organization working in the field of nature conservation and sustainable use of natural resources. Founded in 1948, IUCN has become the global authority on the status ...

from 2004 to 2013 due to pressure by habitat loss, habitat degradation, being hunted for food, and often being kept in captivity. However, the species was downgraded to

Least Concern A least-concern species is a species that has been evaluated and categorized by the International Union for Conservation of Nature (IUCN) as not being a focus of wildlife conservation because the specific species is still plentiful in the wil ...

in 2015, as current populations appear to be stable (although population trends remain generally unknown) and there is substantially less hunting pressure than in the past.

Taxonomy

Description

Range and habitat

Ecology

Conservation

References

Further reading