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Peach-faced Lovebird
The rosy-faced lovebird (''Agapornis roseicollis''), also known as the rosy-collared or peach-faced lovebird, is a species of lovebird native to arid regions in southwestern Africa such as the Namib Desert. Loud and constant chirpers, these birds are very social animals and often congregate in small groups in the wild. They eat throughout the day and take frequent baths. Coloration can vary widely among populations. Plumage is identical in males and females. Lovebirds are renowned for their sleep position in which they sit side-by-side and turn their faces in towards each other. Also, females are well noted to tear raw materials into long strips, "twisty-tie" them onto their backs, and fly substantial distances back to make a nest. These birds are common in the pet industry. Taxonomy It was described by the French ornithologist Louis Jean Pierre Vieillot in 1818. It was originally named ''Psittacus roseicollis'' but later moved to the genus ''Agapornis'' with the other lovebirds ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Erongo
Erongo is one of the 14 regions of Namibia. The capital is Swakopmund. It is named after Mount Erongo, a well-known landmark in Namibia and in this area. Erongo contains the municipalities of Walvis Bay, Swakopmund, Henties Bay and Omaruru, as well as the towns Arandis, Karibib and Usakos. All the main centres within this region are connected by paved roads. The Erongo Region had a population of 150,809 in 2011. As of 2020, it had 119,784 registered voters. In the west, Erongo has a shoreline on the Atlantic Ocean. On land, it borders the following regions: * Kunene - north * Otjozondjupa - northeast * Khomas - southeast * Hardap - south Economy and infrastructure Various mining operations occur within this region at places such as Navachab and on a smaller scale at places surrounding Uis and the desert area. Karibib also has a marble industry. Walvis Bay, fully incorporated into the Erongo Region in 1994, is the principal home of Namibia's fishing industry. Walvis Bay als ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
International Union For Conservation Of Nature
The International Union for Conservation of Nature (IUCN; officially International Union for Conservation of Nature and Natural Resources) is an international organization working in the field of nature conservation and sustainable use of natural resources. It is involved in data gathering and analysis, research, field projects, advocacy, and education. IUCN's mission is to "influence, encourage and assist societies throughout the world to conserve nature and to ensure that any use of natural resources is equitable and ecologically sustainable". Over the past decades, IUCN has widened its focus beyond conservation ecology and now incorporates issues related to sustainable development in its projects. IUCN does not itself aim to mobilize the public in support of nature conservation. It tries to influence the actions of governments, business and other stakeholders by providing information and advice and through building partnerships. The organization is best known to the wide ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Princeton University Press
Princeton University Press is an independent publisher with close connections to Princeton University. Its mission is to disseminate scholarship within academia and society at large. The press was founded by Whitney Darrow, with the financial support of Charles Scribner, as a printing press to serve the Princeton community in 1905. Its distinctive building was constructed in 1911 on William Street in Princeton. Its first book was a new 1912 edition of John Witherspoon's ''Lectures on Moral Philosophy.'' History Princeton University Press was founded in 1905 by a recent Princeton graduate, Whitney Darrow, with financial support from another Princetonian, Charles Scribner II. Darrow and Scribner purchased the equipment and assumed the operations of two already existing local publishers, that of the ''Princeton Alumni Weekly'' and the Princeton Press. The new press printed both local newspapers, university documents, ''The Daily Princetonian'', and later added book publishing ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Frank Knight (artist)
Frank Knight (born 1941) is an Australian wildlife artist and ornithologist. He was born in Port Hedland, Western Australia. He worked as a field and laboratory assistant for the CSIRO from 1959 to 1966, and was the illustrator for the CSIRO's Division of Wildlife Research from 1966 until 1989. He was the illustrator of '' The Graham Pizzey and Frank Knight Field Guide to the Birds of Australia'' and ''A Field Guide to the Mammals of Australia'', as well as of many other scientific and natural history texts and children's books A child ( : children) is a human being between the stages of birth and puberty, or between the developmental period of infancy and puberty. The legal definition of ''child'' generally refers to a minor, otherwise known as a person younge .... He has had several solo exhibitions in Australia. Selected works * * * References 1941 births Living people Australian illustrators Australian bird artists Australian ornithologists Peopl ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ageless Love
Ageless is an adjective describing a person or thing whose age cannot be defined, is non-existent, or appears not to change. It can also describe something that has always existed without a precise beginning or an end. Agelessness can be used as a synonym for immortality; more specifically it refers to eternal youth. Ageless people Agelessness can be attributed to individuals whose physical or mental characteristics appear young for their biological age. The Castrati singers of the Renaissance aged differently from other men due to the lack of testosterone and other hormones, which may have altered their appearance and stature. Specifically, Alessandro Moreschi (1858–1922) was described as having no facial hair and a childish voice and appearance. Modern examples The illusion of agelessness seems to be a goal for many individuals, such as Hollywood celebrities, that have been known to strive for, sometimes undergoing extensive and/or risky cosmetic surgeries. Demi Moore, Nao ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sex Linkage
Sex linked describes the sex-specific patterns of inheritance and presentation when a gene mutation (allele) is present on a sex chromosome (allosome) rather than a non-sex chromosome (autosome). In humans, these are termed X-linked recessive, X-linked dominant and Y-linked. The inheritance and presentation of all three differ depending on the sex of both the parent and the child. This makes them characteristically different from autosomal dominance and recessiveness. There are many more X-linked conditions than Y-linked conditions, since humans have several times as many genes on the X chromosome than the Y chromosome. Only females are able to be carriers for X-linked conditions; males will always be affected by any X-linked condition, since they have no second X chromosome with a healthy copy of the gene. As such, X-linked recessive conditions affect males much more commonly than females. In X-linked recessive inheritance, a son born to a carrier mother and an unaffected f ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Dominance (genetics)
In genetics, dominance is the phenomenon of one variant (allele) of a gene on a chromosome masking or overriding the effect of a different variant of the same gene on the other copy of the chromosome. The first variant is termed dominant and the second recessive. This state of having two different variants of the same gene on each chromosome is originally caused by a mutation in one of the genes, either new (''de novo'') or inherited. The terms autosomal dominant or autosomal recessive are used to describe gene variants on non-sex chromosomes (autosomes) and their associated traits, while those on sex chromosomes (allosomes) are termed X-linked dominant, X-linked recessive or Y-linked; these have an inheritance and presentation pattern that depends on the sex of both the parent and the child (see Sex linkage). Since there is only one copy of the Y chromosome, Y-linked traits cannot be dominant or recessive. Additionally, there are other forms of dominance such as incomple ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lutino Rosy-faced Lovebird Mutation
The lutino peach-faced love bird (''Agapornis roseicollis'') is one of the most popular mutations of rosy-faced lovebird. It is closely followed by the Dutch blue lovebird in popularity. See also *Rosy-faced lovebird The rosy-faced lovebird (''Agapornis roseicollis''), also known as the rosy-collared or peach-faced lovebird, is a species of lovebird native to arid regions in southwestern Africa such as the Namib Desert. Loud and constant chirpers, these b ... * Rosy-faced lovebird colour genetics * Lutino cockatiel mutation References External linksSimple Peach-faced Lovebird Genetics {{Psittaculini Aviculture Vertebrate genetics Lovebirds Rosy-faced lovebird colour mutations ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Fledge
Fledging is the stage in a flying animal's life between hatching or birth and becoming capable of flight. This term is most frequently applied to birds, but is also used for bats. For altricial birds, those that spend more time in vulnerable condition in the nest, the nestling and fledging stage can be the same. For precocial birds, those that develop and leave the nest quickly, a short nestling stage precedes a longer fledging stage. All birds are considered to have fledged when the feathers and wing muscles are sufficiently developed for flight. A young bird that has recently fledged but is still dependent upon parental care and feeding is called a fledgling. People often want to help fledglings, as they appear vulnerable, but it is best to leave them alone. The USA National Phenology Phenology is the study of periodic events in biological life cycles and how these are influenced by seasonal and interannual variations in climate, as well as habitat factors (suc ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Egg (biology)
An egg is an organic vessel grown by an animal to carry a possibly fertilized egg cell (a zygote) and to incubate from it an embryo within the egg until the embryo has become an animal fetus that can survive on its own, at which point the animal hatches. Most arthropods such as insects, vertebrates (excluding live-bearing mammals), and mollusks lay eggs, although some, such as scorpions, do not. Reptile eggs, bird eggs, and monotreme eggs are laid out of water and are surrounded by a protective shell, either flexible or inflexible. Eggs laid on land or in nests are usually kept within a warm and favorable temperature range while the embryo grows. When the embryo is adequately developed it hatches, i.e., breaks out of the egg's shell. Some embryos have a temporary egg tooth they use to crack, pip, or break the eggshell or covering. The largest recorded egg is from a whale shark and was in size. Whale shark eggs typically hatch within the mother. At and up to , the ost ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sociable Weaver
The sociable weaver (''Philetairus socius'') is a species of bird in the weaver family that is endemic to southern Africa. It is the only species in the monotypic genus ''Philetairus''. It is found in South Africa, Namibia, and Botswana. but their range is centered within the Northern Cape Province of South Africa. They build large compound community nests, a rarity among birds. These nests are perhaps the most spectacular structure built by any bird. Taxonomy and systematics The sociable weaver was first described by ornithologist John Latham in 1790. Alternative names include the common social weaver, common social-weaver, and social weaver. Formerly, four sub-species were recognised but the species is now considered monotypic. The sociable weaver is the only extant species in the genus ''Philetairus''. Phylogeny Based on a 2017 DNA-analysis, ''Philetairus socius'' belongs to the group of sparrow weavers (subfamily Plocepasserinae) and is most related to the genus ''Pseu ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bird Nest
A bird nest is the spot in which a bird lays and incubates its eggs and raises its young. Although the term popularly refers to a specific structure made by the bird itself—such as the grassy cup nest of the American robin or Eurasian blackbird, or the elaborately woven hanging nest of the Montezuma oropendola or the village weaver—that is too restrictive a definition. For some species, a nest is simply a shallow depression made in sand; for others, it is the knot-hole left by a broken branch, a burrow dug into the ground, a chamber drilled into a tree, an enormous rotting pile of vegetation and earth, a shelf made of dried saliva or a mud dome with an entrance tunnel. The smallest bird nests are those of some hummingbirds, tiny cups which can be a mere across and high. At the other extreme, some nest mounds built by the dusky scrubfowl measure more than in diameter and stand nearly tall. The study of birds' nests is known as ''caliology''. Not all bird species buil ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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