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Display Behaviour
Display behaviour is a set of ritualized behaviours that enable an animal to communicate to other animals (typically of the same species) about specific stimuli. Such ritualized behaviours can be visual, but many animals depend on a mixture of visual, audio, tactical and chemical signals. Evolution has tailored these stereotyped behaviours to allow animals to communicate both conspecifically and interspecifically which allows for a broader connection in different niches in an ecosystem. It is connected to sexual selection and survival of the species in various ways. Typically, display behaviour is used for courtship between two animals and to signal to the female that a viable male is ready to mate. In other instances, species may make territorial displays, in order to preserve a foraging or hunting territory for its family or group. A third form is exhibited by tournament species in which males will fight in order to gain the 'right' to breed. Animals from a broad range of evolut ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Feather Of Male Pavo Cristatus (Indian Peafowl)
Feathers are epidermis (zoology), epidermal growths that form a distinctive outer covering, or plumage, on both Bird, avian (bird) and some non-avian dinosaurs and other archosaurs. They are the most complex integumentary structures found in vertebrates and an example of a complex evolutionary novelty. They are among the characteristics that distinguish the extant Aves, birds from other living groups. Although feathers cover most of the bird's body, they arise only from certain well-defined tracts on the skin. They aid in flight, thermal insulation, and waterproofing. In addition, coloration helps in communication and crypsis, protection. The study of feathers is called plumology (or plumage science). People use feathers in many ways that are practical, cultural, and religious. Feathers are both soft and excellent at trapping heat; thus, they are sometimes used in high-class bedding, especially pillows, blankets, and mattresses. They are also used as filling for winter clothi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Manakin
The manakins are a Family (biology), family, Pipridae, of small Tyranni, suboscine passerine birds. The group contains 55 species distributed through the American tropics. The name is from Middle Dutch "little man" (also the source of the different bird name ''Munia, mannikin''). Description Manakins range in size from and in weight from . Species in the genus ''Tyranneutes'' are the smallest manakins, those in the genus ''Antilophia'' are believed to be the largest (since the genus ''Schiffornis'' are no longer considered manakins). They are compact stubby birds with short tails, broad and rounded wings, and big heads. The beak, bill is short and has a wide gap. Females and first-year males have dull green plumage; most species are sexual dimorphism, sexually dichromatic in their plumage, the males being mostly black with striking colours in patches, and in some species having long, decorative tail or crown feathers or erectile throat feathers. In some species, males from two t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pacific Northwest
The Pacific Northwest (PNW; ) is a geographic region in Western North America bounded by its coastal waters of the Pacific Ocean to the west and, loosely, by the Rocky Mountains to the east. Though no official boundary exists, the most common conception includes the U.S. states of Oregon, Washington (state), Washington, Idaho, and the Canadian province of British Columbia. Some broader conceptions reach north into Alaska and Yukon, south into Northern California, and east into western Montana. Other conceptions may be limited to the coastal areas west of the Cascade Mountains, Cascade and Coast Mountains, Coast mountains. The Northwest Coast is the coastal region of the Pacific Northwest, and the Northwest Plateau (also commonly known as "British Columbia Interior, the Interior" in British Columbia), is the inland region. The term "Pacific Northwest" should not be confused with the Northwest Territory (also known as the Great Northwest, a historical term in the United States) ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Potlatch
A potlatch is a gift-giving feast practiced by Indigenous peoples of the Pacific Northwest Coast of Canada and the United States,Harkin, Michael E., 2001, Potlatch in Anthropology, International Encyclopedia of the Social and Behavioral Sciences, Neil J. Smelser and Paul B. Baltes, eds., vol 17, pp. 11885-11889. Oxford: Pergamon Press. among whom it is traditionally the primary governmental institution, legislative body, and gift economy, economic system.Aldona Jonaitis. ''Chiefly Feasts: The Enduring Kwakiutl Potlatch''. University of Washington Press 1991. . This includes the Heiltsuk Nation, Heiltsuk, Haida people, Haida, Nuxalk Nation, Nuxalk, Tlingit people, Tlingit, Makah people, Makah, Tsimshian, Nuu-chah-nulth people, Nuu-chah-nulth, Kwakwaka'wakw, and Coast Salish peoples, Coast Salish cultures. Potlatches are also a common feature of the peoples of the Interior and of the Subarctic adjoining the Northwest Coast, although mostly without the elaborate ritual and gift-giv ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Power (sociology)
In political science, power is the ability to influence or direct the actions, beliefs, or conduct of actors. Power does not exclusively refer to the threat or use of force (coercion) by one actor against another, but may also be exerted through diffuse means (such as institutions). Power may also take structural forms, as it orders actors in relation to one another (such as distinguishing between a master and an enslaved person, a householder and their relatives, an employer and their employees, a parent and a child, a political representative and their voters, etc.), and discursive forms, as categories and language may lend legitimacy to some behaviors and groups over others. The term ''authority'' is often used for power that is perceived as legitimate or socially approved by the social structure. Scholars have distinguished between soft power and hard power. Types One can classify such power types along three different dimensions: [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Social Influence
Social influence comprises the ways in which individuals adjust their behavior to meet the demands of a social environment. It takes many forms and can be seen in conformity, socialization, peer pressure, obedience, leadership, persuasion, sales, and marketing. Typically social influence results from a specific action, command, or request, but people also alter their attitudes and behaviors in response to what they perceive others might do or think. In 1958, Harvard psychologist Herbert Kelman identified three broad varieties of social influence. # Compliance is when people appear to agree with others but actually keep their dissenting opinions private. #Identification is when people are influenced by someone who is liked and respected, such as a famous celebrity. #Internalization is when people accept a belief or behavior and agree both publicly and privately. Morton Deutsch and Harold Gerard described two psychological needs that lead humans to conform to the expectations of o ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Meal
A meal is an occasion that takes place at a certain time and includes consumption of food. The English names used for specific meals vary, depending on the speaker's culture, the time of day, or the size of the meal. A meal is different from a snack in that meals are generally larger, more varied, and more filling. Though they can be eaten anywhere, meals usually take place in homes, restaurants, and cafeterias. Regular meals occur on a daily basis, typically several times a day. Special meals are normally held in conjunction with celebratory or momentous occasions such as birthdays, weddings, anniversaries, funerals, and holidays. The type of food that is served or consumed at any given time depends on regional customs. Three main meals are typically eaten in the morning, early afternoon, and evening in most civilizations. Furthermore, the names of meals are often interchangeable by custom as well. Some serve dinner as the main meal at midday, with supper as the late afternoon ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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 separated from Mainland Australia, Australia by the wide Torres Strait, though both landmasses lie on the same continental shelf, and were united during episodes of low sea level in the Pleistocene glaciations as the combined landmass of Sahul. Numerous smaller islands are located to the west and east. The island's name was given by Spanish explorer Yñigo Ortiz de Retez during his maritime expedition of 1545 due to the perceived resemblance of the indigenous peoples of the island to those in the Guinea (region), African region of Guinea. The eastern half of the island is the major land mass of the nation of Papua New Guinea. The western half, known as Western New Guinea, forms a part of Indonesia and is organized as the provinces of Pap ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Papuan Peoples
The indigenous peoples of Western New Guinea in Indonesia and Papua New Guinea, commonly called Papuans, are Melanesians. There is genetic evidence for two major historical lineages in New Guinea and neighboring islands: a first wave from the Malay Archipelago perhaps 50,000 years ago when New Guinea and Australia were a single landmass called Sahuland, much later, a wave of Austronesian people from the north who introduced Austronesian languages and pigs about 3,500 years ago. They also left a small but significant genetic trace in many coastal Papuan peoples. Linguistically, Papuans speak languages from the many families of non-Austronesian languages that are found only on New Guinea and neighboring islands, as well as Austronesian languages along parts of the coast, and recently developed creoles such as Tok Pisin, Hiri Motu, Unserdeutsch, and Papuan Malay. The term "Papuan" is used in a wider sense in linguistics and anthropology. In linguistics, "Papuan languages" is a cov ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hypergamy
Hypergamy (colloquially referred to as "dating up" or "marrying up") is a term used in social science for the act or practice of a person dating or marrying a spouse of higher social status than themselves. The antonym "hypogamy" refers to the inverse: marrying a person of lower social class or status (colloquially "marrying down"). The term hypergyny can also be used to describe the overall practice of women marrying up, since the men would be marrying down. Concepts such as hypergamy, hypogamy, and hypergyny could be considered as special cases of mésalliance. By income In a 2016 paper that explored the income difference between couples in 1980 and 2012, researcher Yue Qian noted that the tendency for women to marry men with higher incomes than themselves still persists in the modern era. The observed gender cliff in the distribution of women's share to the household income at 50% can be explained by income hypergamy preferences by both men and women, together with gen ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Crayfish
Crayfish are freshwater crustaceans belonging to the infraorder Astacidea, which also contains lobsters. Taxonomically, they are members of the superfamilies Astacoidea and Parastacoidea. They breathe through feather-like gills. Some species are found in brooks and streams, where fresh water is running, while others thrive in swamps, ditches, and paddy fields. Most crayfish cannot tolerate polluted water, although some species, such as '' Procambarus clarkii'', are hardier. Crayfish feed on animals and plants, either living or decomposing, and detritus. The term "crayfish" is applied to saltwater species in some countries. Terminology The name "crayfish" comes from the Old French word ' ( Modern French '). The word has been modified to "crayfish" by association with "fish" ( French language">Modern French '). The word has been modified to "crayfish" by association with "fish" ( American variant "crawfish" is similarly derived. Some kinds of crayfish are known lo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Aggression
Aggression is behavior aimed at opposing or attacking something or someone. Though often done with the intent to cause harm, some might channel it into creative and practical outlets. It may occur either reactively or without provocation. In humans, aggression can be caused by various triggers. For example, built-up frustration due to blocked goals or perceived disrespect. Human aggression can be classified into direct and indirect aggression; while the former is characterized by physical or verbal behavior intended to cause harm to someone, the latter is characterized by behavior intended to harm the social relations of an individual or group. In definitions commonly used in the social sciences and behavioral sciences, aggression is an action or response by an individual that delivers something unpleasant to another person. Some definitions include that the individual must intend to harm another person. In an interdisciplinary perspective, aggression is regarded as "an ensemb ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
