搜尋結果
ISO 3166-1 ( Codes for the representation of names of countries and their subdivisions – Part 1: Country codes) is a standard defining codes for the names of countries, dependent territories, and special areas of geographical interest. It is the first part of the ISO 3166 standard published by the International Organization for Standardization .
The number π (/paɪ/; spelled out as "pi") is a mathematical constant that is the ratio of a circle's circumference to its diameter, approximately equal to 3.14159. The number π appears in many formulae across mathematics and physics. It is an irrational number, meaning that it cannot be expressed exactly as a ratio of two integers, although ...
- Taxonomy, Systematics, and Evolution
- Description
- Behaviour and Ecology
- Distribution and Habitat
- Status and Conservation
- In Captivity
- Relationship with Humans
- Further Wording
- External Links
The genus Casuarius was erected by French scientist Mathurin Jacques Brisson in his Ornithologie published in 1760. The type species is the southern cassowary (Casuarius casuarius). The Swedish naturalist Carl Linnaeus had introduced the genus Casuarius in the sixth edition of his Systema Naturae published in 1748, but Linnaeus dropped the genus in...
Typically, all cassowaries are shy birds that are found in the deep forest. They are adept at disappearing long before a human knows they are there. The southern cassowary of the far north Queensland rain forests is not well studied, and the northern and dwarf cassowaries even less so. Females are larger and more brightly coloured than the males. A...
Cassowaries are solitary birds except during courtship, egg-laying, and sometimes around ample food supplies. The male cassowary defends a territory of about 7 km2 (1,700 acres) for himself. Female cassowary have larger territories, overlapping those of several males.[citation needed]While females move among satellite territories of different males...
Cassowaries are native to the humid rainforests of New Guinea, nearby smaller islands, East Nusa Tenggara, the Maluku Islands, and northeastern Australia. They do, however, venture out into palm scrub, grassland, savanna, and swamp forest. Whether some island populations are natural or the result of human trade in young birds is unclear. They can a...
The southern cassowary is endangered in Queensland. Kofron and Chapman, when they assessed the decline of this species, found that of the former cassowary habitat, only 20–25% remains. Habitat loss and fragmentation is the primary cause of decline.They then studied 140 cases of cassowary mortality, and found that motor-vehicle strikes accounted for...
The cassowary has solitary habits and breeds less frequently in zoos than other ratites such as ostrich and emu. Unlike other ratites, it lives exclusively in tropical rainforest, and reproducing this habitat carefully is essential. Unlike the emu, which will live with other sympatric species, such as kangaroos, in "mixed Australian fauna" displays...
Role in Papuan cultures and semi-domestication
There is evidence that the cassowary may have been domesticated by humans thousands of years before the chicken. Some New Guinea Highlands societies capture cassowary chicks and raise them as semi-tame poultry, for use in ceremonial gift exchanges and as food. They are the only indigenous Australasian animal known to have been partly domesticated by people prior to European arrival and colonization and by definition, the oldest form of domesticated animal and the largest domesticated bird. Th...
Urbanisation of local cassowary population
In extremely urbanised areas where Cassowaries used to naturally live such as in Queensland, Australia or in Port Moresby, Papua New Guinea, the local Cassowary population had adapted to its less forested grounds. Increasing urbanisation has increased the likelihood of human-cassowary interaction, a potentially dangerous mix. Although cassowary populations have faced challenges in these urban areas in Northeastern Australia and parts of New Guinea, the cassowaries have proven to be surprising...
Attacks
Cassowaries have a reputation for being dangerous to people and domestic animals. During World War II, American and Australian troops stationed in New Guinea were warned to steer clear of them. In his 1958 book Living Birds of the World, ornithologist Ernest Thomas Gilliardwrote: This assessment of the danger posed by cassowaries has been repeated in print by authors, including Gregory S. Paul and Jared Diamond.A 2003 historical study of 221 cassowary attacks showed that 150 had been against...
Rothschild, Walter (1899). A Monograph of the Genus Casuarius. Transactions of the Zoological Society of London, vol. 15, pt. 5, December 1900.
Cassowary and chicks drinking water on VimeoCassowary videos, photos and sounds on the Internet Bird Collection[permanent dead link]Ingersoll, Ernest (1920). "Cassowary" . Encyclopedia Americana.The Three Musketeers: Milady ( French: Les Trois Mousquetaires: Milady, titled The Three Musketeers – Part II: Milady in the United States [11]) is a 2023 epic action - adventure film directed by Martin Bourboulon, based on Alexandre Dumas 's 1844 novel The Three Musketeers. [3] It is the second film of a two-part epic saga and was preceded ...
0 (zero) is a number representing an empty quantity. Adding 0 to any number leaves that number unchanged. In mathematical terminology, 0 is the additive identity of the integers, rational numbers, real numbers, and complex numbers, as well as other algebraic structures. Multiplying any number by 0 has the result 0, and consequently, division ...
The Chernobyl disaster [a] began on 26 April 1986 with the explosion of the No. 4 reactor of the Chernobyl Nuclear Power Plant near the city of Pripyat in the north of the Ukrainian SSR, close to the border with the Byelorussian SSR, in the Soviet Union. [1] It is one of only two nuclear energy accidents rated at seven—the maximum severity ...
The Battle of Stalingrad[Note 8] (17 July 1942 – 2 February 1943)[27][28][29][30] occurred on the Eastern Front of World War II, beginning when Nazi Germany and its Axis allies attacked and became locked in a protracted struggle with the Soviet Union for control over the Soviet city of Stalingrad in what is now southern Russia. The battle ...
