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Peacock Feather
Peafowl is a common name for three bird species in the genera '' Pavo'' and '' Afropavo'' within the tribe Pavonini of the family Phasianidae, the pheasants and their allies. Male peafowl are referred to as peacocks, and female peafowl are referred to as peahens, although peafowl of either sex are often referred to colloquially as "peacocks." The two Asiatic species are the blue or Indian peafowl originally of the Indian subcontinent, and the green peafowl of Southeast Asia; the one African species is the Congo peafowl, native only to the Congo Basin. Male peafowl are known for their piercing calls and their extravagant plumage. The latter is especially prominent in the Asiatic species, which have an eye-spotted "tail" or "train" of covert feathers, which they display as part of a courtship ritual. The functions of the elaborate iridescent colouration and large "train" of peacocks have been the subject of extensive scientific debate. Charles Darwin suggested that the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pliocene
The Pliocene ( ; also Pleiocene) is the epoch in the geologic time scale that extends from 5.333 million to 2.58See the 2014 version of the ICS geologic time scale million years ago. It is the second and most recent epoch of the Neogene Period in the Cenozoic Era. The Pliocene follows the Epoch and is followed by the Epoch. Prior to the 2009 revision of the geologic time sca ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Iridescent
Iridescence (also known as goniochromism) is the phenomenon of certain surfaces that appear to gradually change color as the angle of view or the angle of illumination changes. Examples of iridescence include soap bubbles, feathers, butterfly wings and seashell nacre, and minerals such as opal. It is a kind of structural coloration that is due to wave interference of light in microstructures or thin films. Pearlescence is a related effect where some or most of the reflected light is white. The term pearlescent is used to describe certain paint finishes, usually in the automotive industry, which actually produce iridescent effects. Etymology The word ''iridescence'' is derived in part from the Greek word ἶρις ''îris'' (gen. ἴριδος ''íridos''), meaning '' rainbow'', and is combined with the Latin suffix ''-escent'', meaning "having a tendency toward". Iris in turn derives from the goddess Iris of Greek mythology, who is the personification of the rainbo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Green Peafowl
The green peafowl or Indonesian peafowl (''Pavo muticus'') is a peafowl species native to the tropical forests of Southeast Asia. It has been listed as endangered on the IUCN Red List since 2009 because the global population has been declining rapidly and is severely fragmented due to loss of habitat. It is the national bird of Myanmar. Description Unlike the related Indian peafowl, the sexes of green peafowl are quite similar in appearance, especially in the wild. Both sexes have long upper tail coverts which cover the actual tail underneath. In the male, this extends up to and is decorated with eyespots, while in the female, the coverts are green and much shorter, just covering the tail. Outside the breeding season, however, the male's train is moulted and distinguishing the sexes can be difficult unless they are observed up close. The neck and breast feathers of both sexes are iridescent green and resemble scales. In the male, the scapulars, median, and greater wing cove ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Peacock By Nihal Jabin
Peafowl is a common name for three bird species in the genera ''Pavo (genus), Pavo'' and ''Afropavo'' within the tribe Pavonini of the family Phasianidae, the pheasants and their allies. Male peafowl are referred to as peacocks, and female peafowl are referred to as peahens, although peafowl of either sex are often referred to colloquialism, colloquially as "peacocks." The two Asiatic species are the blue or Indian peafowl originally of the Indian subcontinent, and the green peafowl of Southeast Asia; the one African species is the Congo peafowl, native only to the Congo Basin. Male peafowl are known for their piercing calls and their extravagant plumage. The latter is especially prominent in the Asiatic species, which have an eye-spotted "tail" or "train" of covert feathers, which they display as part of a courtship ritual. The functions of the elaborate iridescent Animal coloration, colouration and large "train" of peacocks have been the subject of extensive scientific debat ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Paon Blanc Madère 2008
is a Japanese video game developer. The company was founded in August 2004 as DP Inc. and merged with Paon Corporation, Ltd. in March 2015 to form Paon DP. Paon Corporation was founded on January 20, 1999. Through a partnership with Nintendo, Paon developed '' DK: King of Swing'', ''Donkey Kong Barrel Blast'' and '' DK: Jungle Climber''. Paon was also involved in development of 2000 SNK's Neo Geo Pocket Color fighting game titles, ''SNK Gals' Fighters'' as composer and sound work team, as well as composer to some other Neo Geo Pocket Color titles. When the company Data East went bankrupt, Paon became composed of former Data East staff and bought the rights to some of their games, including ''Karnov'', '' Chelnov'', ''Windjammers'', and the '' Kuuga'' trilogy, all of which are now owned by Paon DP, and the ''Glory of Heracles'' series, which is partially owned by them. The rights to the Glory of Heracles series are now split between Paon DP and Nintendo; Nintendo and Paon DP c ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Baby Peacock (18131813108)
An infant or baby is the very young offspring of human beings. ''Infant'' (from the Latin word ''infans'', meaning 'unable to speak' or 'speechless') is a formal or specialised synonym for the common term ''baby''. The terms may also be used to refer to juveniles of other organisms. A newborn is, in colloquial use, an infant who is only hours, days, or up to one month old. In medical contexts, a newborn or neonate (from Latin, ''neonatus'', newborn) is an infant in the first 28 days after birth; the term applies to premature, full term, and postmature infants. Before birth, the offspring is called a fetus. The term ''infant'' is typically applied to very young children under one year of age; however, definitions may vary and may include children up to two years of age. When a human child learns to walk, they are called a toddler instead. Other uses In British English, an ''infant school'' is for children aged between four and seven. As a legal term, ''infancy'' is more lik ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Eggs Of Peafowl At Aravath Kasaragod
Humans and human ancestors have scavenged and eaten animal eggs for millions of years. Humans in Southeast Asia had domesticated chickens and harvested their eggs for food by 1,500 BCE. The most widely consumed eggs are those of fowl, especially chickens. Eggs of other birds, including ostriches and other ratites, are eaten regularly but much less commonly than those of chickens. People may also eat the eggs of reptiles, amphibians, and fish. Fish eggs consumed as food are known as roe or caviar. Bird and reptile eggs consist of a protective eggshell, albumen (egg white), and vitellus (egg yolk), contained within various thin membranes. Egg yolks and whole eggs store significant amounts of protein and choline, and are widely used in cookery. Due to their protein content, the United States Department of Agriculture formerly categorized eggs as ''Meats'' within the Food Guide Pyramid (now MyPlate). Despite the nutritional value of eggs, there are some potential health issues ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Signalling Theory
Within evolutionary biology, signalling theory is a body of theoretical work examining communication between individuals, both within species and across species. The central question is when organisms with conflicting interests, such as in sexual selection, should be expected to provide honest signals (no presumption being made of conscious intention) rather than cheating. Mathematical models describe how signalling can contribute to an evolutionarily stable strategy. Signals are given in contexts such as mate selection by females, which subjects the advertising males' signals to selective pressure. Signals thus evolve because they modify the behaviour of the receiver to benefit the signaller. Signals may be honest, conveying information which usefully increases the fitness of the receiver, or dishonest. An individual can cheat by giving a dishonest signal, which might briefly benefit that signaller, at the risk of undermining the signalling system for the whole population. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Handicap Theory
The handicap principle is a hypothesis proposed by the biologist Amotz Zahavi to explain how evolution may lead to "honest" or reliable signalling between animals which have an obvious motivation to bluff or deceive each other. It suggests that costly signals must be reliable signals, costing the signaller something that could not be afforded by an individual with less of a particular trait. For example, in sexual selection, the theory suggests that animals of greater biological fitness signal this status through handicapping behaviour, or morphology that effectively lowers this quality. The central idea is that sexually selected traits function like conspicuous consumption, signalling the ability to afford to squander a resource. Receivers then know that the signal indicates quality, because inferior-quality signallers are unable to produce such wastefully extravagant signals. History The handicap principle was proposed in 1975 by Israeli biologist Amotz Zahavi. The general ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Amotz Zahavi
Amotz Zahavi ( he, אמוץ זהבי) (August 14, 1928 – May 12, 2017) was an Israeli evolutionary biologist, a Professor in the Department of Zoology at Tel Aviv University, and one of the founders of the Society for the Protection of Nature in Israel. His main work concerned the evolution of signals, particularly those signals that are indicative of fitness, and their selection for "honesty". Biography Amotz Zahavi was influenced to study zoology by the director of the zoo at Tel Aviv, Heinrich Mendelssohn. He received his Ph.D. from Tel Aviv University in 1970. He was married to Avishag Zahavi, a biologist and a co-investigator. He died in Tel Aviv, Israel on May 12, 2017, aged 88. Scientific career Zahavi is best known for his work on the handicap principle, which explains the evolution of characteristics, behaviors or structures that appear contrary to the principles of Darwinian evolution in that they appear to reduce fitness and endanger individual organisms. Evolved ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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