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Gull Egg
Gull eggs, gathered in spring from the nests of wild gulls, are a source or form of eggs as food. Gulls' eggs tend to have speckled shells (which somewhat camouflages them in the landscape), a flavor variously described as fishy or salty that is reminiscent of the birds' marine environment, an especially white or even opalescent albumen when cooked, and almost-red orange yolks. Gull eggs are usually (but not always) larger than any size of chicken egg; for example, a herring-gull egg typically weighs about . One source states that a generalized gull's egg is approximately twice the size of a chicken's egg. ''Egging'' is the prehistoric practice of foraging wild-bird eggs. Gull egging is practiced (to varying degrees) in several subarctic regions, including in Canada, Denmark's Faroe Islands and Greenland, Finland's Åland, Iceland, Norway, Russia (by indigenous minorities of the north), the United Kingdom, and the United States' Alaska. Gull eggs are collected from a number of spe ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Great Black-backed Gull
The great black-backed gull (''Larus marinus'') is the largest member of the gull family. It is a very aggressive hunter, pirate, and scavenger which breeds on the coasts and islands of the North Atlantic in northern Europe and northeastern North America. Southern populations are generally sedentary, while those breeding in the far north (northern Norway, northwest Russia) move farther south in winter. A few also move inland to large lakes and reservoirs. The adult has a white head, neck and underparts, dark blackish-grey wings and back, pink legs and the bill yellow with a red spot. Taxonomy The great black-backed gull was one of the many species originally described by Carl Linnaeus in his 1758 10th edition of Systema Naturae, 10th edition of ''Systema Naturae'', and it still bears its original name of ''Larus marinus''. The scientific name is from Latin. ''Larus'' appears to have referred to a gull or other large seabird. The specific name ''marinus'' means "marine", or when t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Poultry
Poultry () are domesticated birds kept by humans for the purpose of harvesting animal products such as meat, Eggs as food, eggs or feathers. The practice of animal husbandry, raising poultry is known as poultry farming. These birds are most typically members of the superorder Galloanserae (fowl), especially the order Galliformes (which includes chickens, quails, and domestic turkey, turkeys). The term also includes waterfowls of the family Anatidae (ducks and geese) but does not include wild birds hunted for food known as game (hunting), game or wild meat, quarry. Recent genomic studies involving the four extant junglefowl species reveals that the domestication of chicken, the most populous poultry species, occurred around 8,000 years ago in Southeast Asia. This was previously believed to have occurred around 5,400 years ago, also in Southeast Asia. The process may have originally occurred as a result of people hatching and rearing young birds from eggs collected from the wild, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Public Health
Public health is "the science and art of preventing disease, prolonging life and promoting health through the organized efforts and informed choices of society, organizations, public and private, communities and individuals". Analyzing the determinants of health of a population and the threats it faces is the basis for public health. The ''public'' can be as small as a handful of people or as large as a village or an entire city; in the case of a pandemic it may encompass several continents. The concept of ''health'' takes into account physical, psychological, and Well-being, social well-being, among other factors.What is the WHO definition of health? from the Preamble to the Constitution of WHO as adopted by the Internationa ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Toxicology
Toxicology is a scientific discipline, overlapping with biology, chemistry, pharmacology, and medicine, that involves the study of the adverse effects of chemical substances on living organisms and the practice of diagnosing and treating exposures to toxins and toxicants. The relationship between dose and its effects on the exposed organism is of high significance in toxicology. Factors that influence chemical toxicity include the dosage, duration of exposure (whether it is acute or chronic), route of exposure, species, age, sex, and environment. Toxicologists are experts on poisons and poisoning. There is a movement for evidence-based toxicology as part of the larger movement towards evidence-based practices. Toxicology is currently contributing to the field of cancer research, since some toxins can be used as drugs for killing tumor cells. One prime example of this is ribosome-inactivating proteins, tested in the treatment of leukemia. The word ''toxicology'' () ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bioindicators
A bioindicator is any species (an indicator species) or group of species whose function, population, or status can reveal the qualitative status of the environment. The most common indicator species are animals. For example, copepods and other small water crustaceans that are present in many water bodies can be monitored for changes (biochemical, physiological, or behavioural) that may indicate a problem within their ecosystem. Bioindicators can tell us about the cumulative effects of different pollutants in the ecosystem and about how long a problem may have been present, which physical and chemical testing cannot. A biological monitor or biomonitor is an organism that provides quantitative information on the quality of the environment around it. Therefore, a good biomonitor will indicate the presence of the pollutant and can also be used in an attempt to provide additional information about the amount and intensity of the exposure. A biological indicator is also the name gi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Renewable Resource
A renewable resource (also known as a flow resource) is a natural resource which will replenish to replace the portion depleted by usage and consumption, either through natural reproduction or other recurring processes in a finite amount of time in a human time scale. It is also known as non conventional energy resources. When the recovery rate of resources is unlikely to ever exceed a human time scale, these are called perpetual resources. Renewable resources are a part of Earth's natural environment and the largest components of its ecosphere. A positive life-cycle assessment is a key indicator of a resource's sustainability. Definitions of renewable resources may also include agricultural production, as in agricultural products and to an extent water resources.What are "Renewable Resourc ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Western Gull
The western gull (''Larus occidentalis'') is a large white-headed gull that lives on the west coast of North America and the Pacific Ocean. The western gull ranges from British Columbia, Canada, to Baja California, Mexico. It was previously considered conspecific with the yellow-footed gull (''Larus livens'') of the Gulf of California. Physical description The western gull is a large gull that can measure in total length, spans across the wings, and weighs . The average mass among a survey of 48 gulls of the species was . Among standard measurements, the wing chord is , the bill is and the tarsus is . The western gull has a white head and body, and upperparts or mantle is dark grey. The head generally remains white year-round, developing little to no streaking patterns in northern populations during the nonbreeding phase (basic plumage). It is debatable the extent of head markings can be found in pure Western Gulls as they form a hybrid zone with the glaucous-winged gul ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Short-billed Gull
The short-billed gull (''Larus brachyrhynchus'') is a species of gull that breeds in northwestern North America. In North America, it was previously known as the mew gull, when it was considered conspecific with the palearctic common gull (''Larus canus''). Most authorities, including the American Ornithological Society in 2021, have split the two populations as distinct species. Taxonomy The species was first described by Scottish naturalist John Richardson in 1831 as the 'short-billed mew gull', ''Larus brachyrhynchus''. Though some authorities, including the American Ornithologist's Union from 1931 onwards, have long considered ''brachyrhynchus'' to be a subspecies of the common gull, others have recognized the two as distinct species. In 2021, the American Ornithological Society agreed to split the short-billed gull as a distinct species based on differences in genetics, plumage, morphology and vocalizations. Though 'mew gull' has been used as name for the species in North ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sabine's Gull
Sabine's gull ( or ) (''Xema sabini'') is a small gull. It is usually treated as the only species placed in the genus ''Xema'', though some authors include it with other gulls in a wide view of the genus ''Larus''. It has also been known historically as fork-tailed gull or xeme (from the genus name). It breeds in colonies on arctic coasts and tundra, laying two or three spotted olive-brown eggs in a ground nest lined with grass. Sabine's gull is pelagic outside the breeding season. It takes a wide variety of mainly animal food, and will eat any suitable small prey. Taxonomy Sabine's gull was formally described in 1819 by the naturalist Joseph Sabine under the binomial name ''Larus sabini''. Sabine based his description on specimens that had been collected by his brother Captain Edward Sabine who had accompanied Captain John Ross's on a voyage to look for the Northwest Passage. The birds were found breeding on low-lying islands off the west coast of Greenland in July 1818. Sabi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lesser Black-backed Gull
The lesser black-backed gull (''Larus fuscus'') is a large gull that breeds on the Atlantic coasts of Europe. It is migratory, wintering from the British Isles south to West Africa. However, it has increased dramatically in North America, especially along the east coast. Formerly just a winter visitor to North America, it has increased and occurs in large numbers some winters and birds are now recorded year-round. However, there is serious concern about decline in many parts of its range. The species is on the UK Amber List because the UK is home to 40 per cent of the European population and more than half of these are found at fewer than ten breeding sites. Taxonomy The lesser black-backed gull was one of the many species originally described by Carl Linnaeus in his 1758 10th edition of ''Systema Naturae'', and it still bears its original name ''Larus fuscus''. The scientific name is from Latin. ''Larus'' appears to have referred to a gull or other large seabird, and ''fuscus'' ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
