World Whale Day Takes place annually on 20 February. The purpose of World Whale Day is to inform the public concerning these aquatic mammals and to highlight conservation efforts which are taking place to protect these endangered animals.
Whales are a widely distributed and diverse group of fully aquatic placental marine mammals. They are an informal grouping within the infraorder Cetacea, usually excluding dolphins and porpoises. Whales, dolphins and porpoises belong to the order Cetartiodactyla with even-toed ungulates and their closest living relatives are the hippopotamuses, having diverged about 40 million years ago. The two parvorders of whales, baleen whales (Mysticeti) and toothed whales (Odontoceti), are thought to have split apart around 34 million years ago. The whales comprise eight extant families: Balaenopteridae (the rorquals), Balaenidae (right whales), Cetotheriidae (the pygmy right whale), Eschrichtiidae (the grey whale), Monodontidae (belugas and narwhals), Physeteridae (the sperm whale), Kogiidae (the dwarf and pygmy sperm whale), and Ziphiidae (the beaked whales).
Whales are creatures of the open ocean; they feed, mate, give birth, suckle and raise their young at sea. So extreme is their adaptation to life underwater that they are unable to survive on land. Whales range in size from the 2.6 metres (8.5 ft) and 135 kilograms (298 lb) dwarf sperm whale to the 29.9 metres (98 ft) and 190 metric tons (210 short tons) blue whale, which is the largest creature that has ever lived. The sperm whale is the largest toothed predator on earth. Several species exhibit sexual dimorphism, in that the females are larger than males. Baleen whales have no teeth; instead they have plates of baleen, a fringe-like structure used to expel water while retaining the krill and plankton which they feed on. They use their throat pleats to expand the mouth to take in huge gulps of water. Balaenids have heads that can make up 40% of their body mass to take in water. Toothed whales, on the other hand, have conical teeth adapted to catching fish or squid. Baleen whales have a well developed sense of “smell”, whereas toothed whales have well-developed hearing − their hearing, that is adapted for both air and water, is so well developed that some can survive even if they are blind. Some species, such as sperm whales, are well adapted for diving to great depths to catch squid and other favoured prey.
Whales have evolved from land-living mammals. As such whales must breathe air regularly, although they can remain submerged under water for long periods of time. Some species such as the sperm whale are able to stay submerged for as much as 90 minutes. They have blowholes (modified nostrils) located on top of their heads, through which air is taken in and expelled. They are warm-blooded, and have a layer of fat, or blubber, under the skin. With streamlined fusiform bodies and two limbs that are modified into flippers, whales can travel at up to 20 knots, though they are not as flexible or agile as seals. Whales produce a great variety of vocalizations, notably the extended songs of the humpback whale. Although whales are widespread, most species prefer the colder waters of the Northern and Southern Hemispheres, and migrate to the equator to give birth. Species such as humpbacks and blue whales are capable of travelling thousands of miles without feeding. Males typically mate with multiple females every year, but females only mate every two to three years. Calves are typically born in the spring and summer months and females bear all the responsibility for raising them. Mothers of some species fast and nurse their young for one to two years.
Whales were once relentlessly hunted for their products, however they are now protected by international law. The North Atlantic right whales nearly became extinct in the twentieth century, with a population low of 450, and the North Pacific grey whale population is ranked Critically Endangered by the IUCN. Besides whaling, they also face threats from bycatch and marine pollution. The meat, blubber and baleen of whales have traditionally been used by indigenous peoples of the Arctic. Whales have been depicted in various cultures worldwide, notably by the Inuit and the coastal peoples of Vietnam and Ghana, who sometimes hold whale funerals. Whales occasionally feature in literature and film, as in the great white whale of Herman Melville’s Moby Dick. Small whales, such as belugas, are sometimes kept in captivity and trained to perform tricks, but breeding success has been poor and the animals often die within a few months of capture. Whale watching has become a form of tourism around the world.
More events happening on 20 February
Clean Out Your Bookcase Day
Love Your Pet Day
National Cherry Pie Day
National Hoodie Hoo Day
World Day for Social Justice
English naturalist Charles Robert Darwin, FRS was born in The Mount, Shrewsbury, Shropshire, England on 12 February 1809. He was the grandson of Erasmus Darwin on his father’s side, and of Josiah Wedgwood on his mother’s side. As an eight-year-old Charles already had a taste for natural history and collecting. From September 1818 he joined his older brother Erasmus at the Anglican Shrewsbury School as a boarder. Darwin spent the summer of 1825 as an apprentice doctor, helping his father treat the poor of Shropshire, before going to the University of Edinburgh Medical School with his brother Erasmus in October 1825. In Darwin’s second year he joined the Plinian Society, a student natural history group whose debates strayed into radical materialism. He assisted Robert Edmond Grant’s investigations of the anatomy and life cycle of marine invertebrates in the Firth of Forth, and on 27 March 1827 presented at the Plinian his own discovery that black spores found in oyster shells were the eggs of a skate leech.
He learned classification of plants, and assisted with work on the collections of the University Museum. Charles then went to to Christ’s College, Cambridge, for a Bachelor of Arts degree as the first step towards becoming an Anglican parson. His cousin William Darwin Fox introduced him to beetle collecting and He became a close friend and follower of botany professor John Stevens Henslow and met other leading naturalist. Darwin Stayed at Cambridge until June. He studied Paley’s Natural Theology, which made an argument for divine design in nature, explaining adaptation as God acting through laws of nature. He read John Herschel’s new book, which described the highest aim of natural philosophy and Alexander von Humboldt’s Personal Narrative of scientific travels. Inspired with “a burning zeal” to contribute, Darwin planned to visit Tenerife with some classmates after graduation to study natural history in the tropics. In preparation, he joined Adam Sedgwick’s geology course, then travelled with him, in order to map strata in Wales.
After a week with student friends at Barmouth, Darwin returned home on 29 August he learnt that Henslow had recommended him as suitable gentleman naturalist for a self-funded supernumerary place on HMS Beagle with captain Robert FitzRoy to chart the coastline of South America. The voyage began on 27 December 1831; it lasted almost five years. Darwin spent most of that time on land investigating geology and making natural history collections, while the Beagle surveyed and charted coasts. He kept careful notes of his observations and theoretical speculations, and at intervals during the voyage his specimens were sent to Cambridge together with letters including a copy of his journal for his family. He had some expertise in geology, beetle collecting and dissecting marine invertebrates.On their first stop ashore at St. Jago, Darwin found that a white band high in the volcanic rock cliffs included seashells. Fitzroy gave him a volume of Charles Lyell’s Principles of Geology which set out uniformitarian concepts of land slowly rising or falling over immense periods, and Darwin saw things Lyell’s way, theorising and thinking of writing a book on geology. In Brazil Darwin was delighted by the tropical forest, but detested the sight of slavery. At Punta Alta in Patagonia he made a major find of fossil bones of huge extinct mammals in cliffs beside modern seashells, indicating recent extinction with no signs of change in climate or catastrophe.
He identified the little known Megatherium by a tooth and its association with bony armour which resembled a giant armadillo. The finds brought great interest when they reached England. On rides into the interior to explore geology and collect more fossils he gained social, political and anthropological insights into both native and colonial people at a time of revolution, and learnt that two types of rhea had separate but overlapping territories. Further south he saw stepped plains of shingle and seashells as raised beaches showing a series of elevations. He read Lyell’s second volume but his discoveries and theories challenged Lyell’s ideas of smooth continuity and of extinction of species. Darwin also experienced an earthquake in Chile and saw signs that the land had just been raised, including mussel-beds stranded above high tide. High in the Andes he saw seashells, and several fossil trees that had grown on a sand beach. He theorised that as the land rose, oceanic islands sank, and coral reefs round them grew to form atolls. On the geologically new Galápagos Islands Darwin looked for evidence attaching wildlife to an older “centre of creation”, and found mockingbirds allied to those in Chile but differing from island to island. He heard that slight variations in the shape of tortoise shells showed which island they came from. The Beagle investigated how the atolls of the Cocos (Keeling) Islands had formed, and the survey supported Darwin’s theories.
When the Beagle reached Falmouth, Cornwall, on 2 October 1836, Darwin was already a celebrity in scientific circles in December 1835 after selected naturalists had been given a pamphlet of his geological letters. hurried to Cambridge to see Henslow, who advised on finding naturalists available to catalogue the collections and agreed to take on the botanical specimens. Darwin’s father organised investments, enabling his son to be a self-funded gentleman scientist, and an excited Darwin went round the London institutions being fêted and seeking Zoologists and otherexperts to describe the huge collections.Darwin was introduced to the anatomist Richard Owen, who had the facilities of the Royal College of Surgeons to work on the fossil bones collected by Darwin. Owen’s surprising results included other gigantic extinct ground sloths as well as the Megatherium, a near complete skeleton of the unknown Scelidotherium and a hippopotamus-sized rodent-like skull named Toxodon resembling a giant capybara. The armour fragments were actually from Glyptodon, a huge armadillo-like creature. Darwin realised that these extinct creatures were related to living species in South America.Darwin wrote his first paper, showing that the South American landmass was slowly rising, and read it to the Geological Society of London and presented his mammal and bird specimens to the Zoological Society. The ornithologist John Gould soon announced that the Galapagos birds that Darwin had thought a mixture of blackbirds, “gros-beaks” and finches, were, in fact, twelve separate species of finches.Darwin was also elected to the Council of the Geological Society
Darwin then moved to London and joined Lyell’s social circle of scientists and experts such as Charles Babbage and writer Harriet Martineau who promoted Malthusianism underlying the controversial Whig Poor Law reforms to stop welfare from causing overpopulation and more poverty. Transmutation was anathema to Anglicans defending social order,but reputable scientists openly discussed the subject and there was wide interest in John Herschel’s letter praising Lyell’s approach as a way to find a natural cause of the origin of new species. Darwin learnt that the Galápagos mockingbirds from different islands were separate species, not just varieties, and what Darwin had thought was a “wren” was also in the finch group. The two rheas were also distinct species. Darwin then started writing about Transmutation of Species, and speculated about the possibility that “one species does change into another” to explain the geographical distribution of living species such as the rheas, and extinct ones such as the strange Macrauchenia which resembled a giant guanaco.
Darwin Speculated about lifespan, reproduction, variations in offspring to alter and adapt to different environments using the Galápagos tortoises, mockingbirds and rheas as examples postulating a single evolutionary tree containing common ancestors. While developing this intensive study of transmutation, Darwin became mired in more work. Still rewriting his Journal, he took on editing and publishing the expert reports on his collections, and with Henslow’s help obtained a Treasury grant of £1,000 to sponsor this multi-volume Zoology of the Voyage of H.M.S. Beagle, he also planned books on geology.Sadly all this work took it’s toll on Darwin’s health so he took a break in the countryside in Staffordshire where he met his future wife Emma Wedgewood and also formed a new & important theory” regarding the earthworms role in soil formation which Darwin presented at the Geological Society and Darwin became Secretary of the Geological Society. Despite the grind of writing and editing the Beagle reports, Darwin made remarkable progress on transmutation.
Darwin’s health deteriorated and For the rest of his life, he was repeatedly incapacitated with episodes of stomach pains, vomiting, severe boils, palpitations, trembling and other symptoms, particularly during times of stress. During another break he went “geologising” in Scotland. He visited Glen Roy in glorious weather to see the parallel “roads” cut into the hillsides at three heights. After recuperating he returned to Shrewsbury and Continuing his research in London, Darwin’s wide reading now included the sixth edition of Malthus’s An Essay on the Principle of Population, and asserted that human “population, when unchecked, goes on doubling itself every twenty five years, or increases in a geometrical ratio”, a geometric progression so that population soon exceeds food supply in what is known as a Malthusian catastrophe & compare this to de Candolle’s “warring of the species” of plants and the struggle for existence among wildlife, explaining how numbers of a species kept roughly stable. favourable variations would make organisms better at surviving and passing the variations on to their offspring, & favourable variations would tend to be preserved, and unfavourable ones to be destroyed. The result of this would result in the formation of new species.
Darwin saw a similarity between farmers picking the best stock in selective breeding, and a Malthusian Nature so that “every part of newly acquired structure is fully practical and perfected”. He later called his theory natural selection. On 29 January Darwin and Emma Wedgwood were married at Maer in Shropshire.Darwin’s book The Structure and Distribution of Coral Reefs on his theory of atoll formation was also published in May 1842 and he then wrote his first draft of his theory of natural selection. Darwin completed his third geological book in 1846. He now renewed a fascination and expertise in marine invertebrates, dating back to his student days classifying the barnacles he had collected on the voyage, enjoying observing beautiful structures and thinking about comparisons with allied structures.
In an attempt to improve his chronic ill health, Darwin visited Malvern spa and benefited from hydrotherapy. After eight years of work on barnacles (Cirripedia), Darwin’s theory helped him to find “homologies” showing that slightly changed body parts served different functions to meet new conditions This earned him the Royal Society’s Royal Medal, and it made his reputation as a biologist & realised that divergence in the character of descendants could be explained by them becoming adapted to diversified places in the economy of nature.By the start of 1856, Darwin was investigating whether eggs and seeds could survive travelacross seawater to spread species across oceans.By the start of 1856, Darwin was investigating whether eggs and seeds could survive travel across seawater to spread species across oceans. Darwin began work on a “big book on species” entitled Natural Selection and also presented a thesis On the Tendency of Species to form Varieties; and on the Perpetuation of Varieties and Species by Natural Means of Selection to the Linnean Society. At first There was little immediate attention to this announcement of the theory & Despite suffering from ill health he was getting constant encouragement from his scientific friends.
Upon it’s publication On the Origin of Species proved unexpectedly popular, In the book, Darwin set out “one long argument” of detailed observations, inferences and consideration of anticipated objections, and states that many more individuals of each species are born than can possibly survive so there is a recurring struggle for existence, it follows that any being, if it changes in any manner helpful to itself, will have a better chance of surviving, and thus be naturally selected. From the strong principle of inheritance, any selected variety will tend to propagate its new and modified form. He put a strong case for common descent, but avoided the then controversial term “evolution”, The book aroused international interest, although there was less controversy than had greeted the popular Vestiges of the Natural History of Creation,The Church of England’s response was mixed. Darwin’s old Cambridge tutors Sedgwick and Henslow dismissed the ideas, but liberal clergymen interpreted natural selection as an instrument of God’s design.
Though Darwin’s illness kept him away from the public debates, he eagerly scrutinised the scientific response, commenting on press cuttings, reviews, articles, satires and caricatures, and corresponded on it with colleagues worldwide. Darwin had only said “Light will be thrown on the origin of man”. Despite repeated bouts of illness during the last years of his life, Darwin’s work continued. Having published On the Origin of Species as an abstract of his theory, he pressed on with experiments, research, and writing of his “big book”. He covered human descent from earlier animals including evolution of society and of mental abilities, as well as explaining decorative beauty in wildlife and diversifying into innovative plant studies.Enquiries about insect pollination led in 1861 to novel studies of wild orchids, showing adaptation of their flowers to attract specific moths to each species and ensure cross fertilisation.
In 1862 Fertilisation of Orchids gave his first detailed demonstration of the power of natural selection to explain complex ecological relationships, making testable predictions. As his health declined, he lay on his sickbed in a room filled with inventive experiments to trace the movements of climbing plants. In 1882 he was diagnosed with what was called “angina pectoris” which then meant coronary thrombosis and disease of the heart. At the time of his death, the physicians diagnosed anginal attacks”, and “heart-failure”. He died at Down House on 19 April 1882. His last words were to his family, telling Emma “I am not the least afraid of death – Remember what a good wife you have been to me – Tell all my children to remember how good they have been to me”, then while she rested, he repeatedly told Henrietta and Francis “It’s almost worth while to be sick to be nursed by you”.
He was buried at Westminster Abbey close to John Herschel and Sir Isaac Newton, at the request of His colleagues, and after public and parliamentary petitioning, by William Spottiswoode (President of the Royal Society) .Darwin had convinced most scientists that evolution as descent with modification was correct, and he was regarded as a great scientist who had revolutionised ideas. Though few agreed with his views on “natural selection” he was honoured in June 1909 by more than 400 officials and scientists from across the world who met in Cambridge to commemorate his centenary and the fiftieth anniversary of On the Origin of Species. During this period, which has been called “the eclipse of Darwinism”, scientists proposed various alternative evolutionary mechanisms which proved untenable. The development of the modern evolutionary synthesis from the 1930s to the 1950s, incorporating natural selection with population genetics and Mendelian genetics, suggested natural selection was the basic mechanism of evolution
Western Monarch Day takes place annually on 5 February. It was founded on 5 February 2004 by California state legislature to celebrate Monarch butterflies and their annual migration to spend winters on the central coast of California;
The monarch butterfly (Danaus plexippus) is a milkweed butterfly (subfamily Danainae) in the family Nymphalidae. Other common names depending on region include milkweed, common tiger, wanderer, and black veined brown. It may be the most familiar North American butterfly, and is considered an iconic pollinator species. Its wings feature an easily recognizable black, orange, and white pattern, with a wingspan of 8.9–10.2 cm (3 1⁄2–4 in) The viceroy butterfly is similar in color and pattern, but is markedly smaller and has an extra black stripe across each hindwing.
The eastern North American monarch population is notable for its annual southward late-summer/autumn migration from the northern and central United States and southern Canada to Florida and Mexico. During the autumn migration, monarchs cover thousands of miles, with a corresponding multi-generational return north. The western North American population of monarchs west of the Rocky Mountains often migrates to sites in southern California but has been found in overwintering Mexican sites as well..Monarchs were transported to the International Space Station and were bred there.
The name “monarch” is believed to be given in honor of King William III of England, whose secondary title Prince of Orange makes a reference to the butterfly’s main color The monarch was originally described by Carl Linnaeus in his Systema Naturae of 1758 and placed in the genus Papilio. In 1780, Jan Krzysztof Kluk used the monarch as the type species for a new genus Danau. Danaus (Ancient Greek Δαναός), a great-grandson of Zeus, was a mythical king in Egypt or Libya, who founded Argos; Plexippus (Πλήξιππος) was one of the 50 sons of Aegyptus, the twin brother of Danaus. In Homeric Greek, his name means “one who urges on horses”, i.e. “rider” or “charioteer”. In the 10th edition of Systema Naturae. Linnaeus wrote that the names of the Danai festivi, the division of the genus to which Papilio plexippus belonged, were derived from the sons of Aegyptus. Linnaeus divided his large genus Papilio, containing all known butterfly species, into what we would now call subgenera. The Danai festivi formed one of the “subgenera”, containing colorful species, as opposed to the Danai candidi, containing species with bright white wings. Linnaeus wrote: “Danaorum Candidorum nomina a filiabus Danai Aegypti, Festivorum a filiis mutuatus sunt.” (English: “The names of the Danai candidi have been derived from the daughters of Danaus, those of the Danai festivi from the sons of Aegyptus.”)
The Monarch is often mistaken for the similar viceroy butterfly, the monarch’s wingspan ranges from 8.9 to 10.2 centimetres (3.5–4.0 in. The uppersides of the wings are tawny orange, the veins and margins are black, and there are two series of small white spots in the margins. Monarch forewings also have a few orange spots near their tips. Wing undersides are similar, but the tips of forewings and hindwings are yellow brown instead of tawny orange and the white spots are larger. The shape and color of the wings change at the beginning of the migration and appear redder and more elongated than later migrants. Wings size and shape differ between migratory and non-migratory monarchs. Monarchs from eastern North America have larger and more angular forewings than those in the western population. Monarch flight has been described as “slow and sailing and the speed has been estimated at approximately 9 km/hr or 5.5 mph.
In North America monarchs migrate both north and south on an annual basis. The population east of the Rocky Mountains migrates to the sanctuaries of the Mariposa Monarca Biosphere Reserve in Mexico and parts of Florida. The western population overwinters in various coastal sites in central and southern California. The overwintered population of those east of the Rockies may reach as far north as Texas and Oklahoma during the spring migration. The second, third and fourth generations return to their northern locations in the United States and Canada in the spring. Captive-raised monarchs appear capable of migrating to overwintering sites in Mexico, though they have a much lower migratory success rate than wild monarchs do. Recent discoveries have located monarch overwintering sites in Arizona. The range of the western and eastern populations of the Monarch Butterfly expands and contracts depending upon the season. The range differs between breeding areas, migration routes, and winter roosts. However, no genetic differences between the western and eastern monarch populations exist. The monarch is found from southern Canada through northern South America It has also been found in Bermuda, Cook Islands, Hawaii, Cub and other Caribbean islands the Solomons, New Caledonia, New Zealand, Papua New Guinea, Australia, the Azores, the Canary Islands, Gibraltar, the Philippines, and North Africa. It appears in the UK in some years as an accidental migrant.
Monarchs are foul tasting and poisonous due to the presence of cardenolide aglycones in their bodies, which the caterpillars ingest as they feed on milkweed from which they sequester cardiac glycosides, or more specifically cardenolides, which are steroids that act in heart-arresting ways similar to digitalis.
The monarch is the state insect of Alabama, Idaho, Illinois, Minnesota, Texas, Vermont, and West Virginia. Legislation was introduced to make it the national insect of the United States, but this failed in 1989 and again in 1991. Monarch Butterflies are now of international interest as they are an at-risk species. So A growing number of homeowners are establishing butterfly gardens; monarchs can be attracted by cultivating a butterfly garden with specific milkweed species and nectar plants. An IMAX film, Flight of the Butterflies, describes the story of the Urquharts, Brugger and Trail to document the then unknown monarch migration to Mexican overwintering areas. Many Sanctuaries and reserves have also been created at overwintering locations in Mexico and California to limit habitat destruction. These sites can generate significant tourism revenue. Organizations and individuals participate in tagging programs. Tagging information is used to study migration patterns. The 2012 novel by Barbara Kingsolver, Flight Behavior, deals with the appearance of a large population in the Appalachians.
World Animal Reiki Day takes place annually on 5 February. It wasFounded by Kathleen Prasad after she rescued a dog named Dakota from an animal shelter, who becomes her beloved canine companion for over 16 years. Prasad practiced Reiki Massage on her dog Dakota, and saw a difference, this convinced her of the benefits of Reiki massage therapy for animals as well as people.
Reiki (霊気, is a form of alternative medicine called energy healing. Reiki practitioners use a technique called palm healing or hands-on healing through which a “universal energy” is said to be transferred through the palms of the practitioner to the patient in order to encourage emotional or physical healing. It was Developed in Japan in 1922 by Mikao Usui. The Japanese reiki is commonly written as レイキ in katakana syllabary or as 霊気 in shinjitai “new character form” kanji. It compounds the words rei (霊: “spirit, miraculous, divine”) and ki (気; qi: “gas, vital energy, breath of life, consciousness”).Ki is defined as “… spirits; one’s feelings, mood, frame of mind; temperament, temper, disposition, one’s nature, character; mind to do something, intention, will; care, attention, precaution” “feeling of mystery,””an atmosphere (feeling) of mystery”,,and “an ethereal atmosphere (that prevails in the sacred precincts of a shrine); (feel, sense) a spiritual (divine) presence.” Besides the usual Sino-Japanese pronunciation reiki, these kanji 霊気 have an alternate Japanese reading, namely ryōge, meaning “demon; ghost” (especially in spirit possession).
Chinese língqì 靈氣 is similar, this was first recorded in the (ca. 320 BCE) Neiye “Inward Training” section of the Guanzi, and describes Chi as either “a mysterious vital energy within the mind which is affected by mental agitation. A”spiritual influence or atmosphere”; intelligence; power of understanding, or a supernatural power or force, A spiritual influence, an ingenuousness or cleverness.”
However many consider Reiki a pseudoscience it is based on qi (“chi”), which practitioners say is a universal life force, although there is no empirical evidence that such a life force exists. Clinical research has not shown reiki to be effective as a treatment for any medical condition. There has been no proof of the effectiveness of reiki therapy compared to placebo nevertheless it has been adapted into varying cultural traditions across the world. An overview of reiki investigations found that studies reporting positive effects had methodological flaws. The American Cancer Society stated that reiki should not replace conventional cancer treatment, a sentiment echoed by Cancer Research UK and the National Center for Complementary and Integrative Health.
Hedgehog day takes place annually on 2 February. A hedgehog is any of the spiny mammals of the subfamily Erinaceinae, in the eulipotyphlan family Erinaceidae. There are seventeen species of hedgehog in five genera found through parts of Europe, Asia, and Africa, and in New Zealand by introduction. There are no hedgehogs native to Australia and no living species native to the Americas (the extinct genus Amphechinus was once present in North America). Hedgehogs share distant ancestry with shrews (family Soricidae), with gymnures possibly being the intermediate link, and they have changed little over the last 15 million years. Like many of the first mammals, they have adapted to a nocturnal way of life. Their spiny protection resembles that of the unrelated porcupines, which are rodents, and echidnas, a type of monotreme.
Hedgehogs are easily recognized by their spines, which are hollow hairs made stiff with keratin. Their spines are not poisonous or barbed and unlike the quills of a porcupine, do not easily detach from their bodies. However, the immature animal’s spines normally fall out as they are replaced with adult spines. This is called “quilling”. Spines can also shed when the animal is diseased or under extreme stress. All species of hedgehogs possess is the ability to roll into a tight ball, causing all of the spines to point outwards. The hedgehog’s back contains two large muscles that control the position of the quills. When the creature is rolled into a ball, the quills on the back protect the tucked face, feet, and belly, which are not quilled. Since the effectiveness of this strategy depends on the number of spines, some desert hedgehogs that evolved to carry less weight are more likely to flee or even attack, ramming an intruder with the spines; rolling into a spiny ball for those species is a last resort. The various species are prey to different predators: while forest hedgehogs are prey primarily to birds (especially owls) and ferrets, smaller species like the long-eared hedgehog are prey to foxes, wolves, and mongooses.
Hedgehogs are primarily nocturnal, though some species can also be active during the day. Hedgehogs sleep for a large portion of the day under bushes, grasses, rocks, or most commonly in dens dug in the ground, with varying habits among the species. All wild hedgehogs can hibernate, though not all do, depending on temperature, species, and abundance of food. Hedgehogs are fairly vocal and communicate through a combination of grunts, snuffles and/or squeals, depending on species.Hedgehogs occasionally perform a ritual called anointing. When the animal encounters a new scent, it will lick and bite the source, then form a scented froth in its mouth and paste it on its spines with its tongue. The purpose of this habit is unknown, but some experts believe anointing camouflages the hedgehog with the new scent of the area and provides a possible poison or source of infection to predators poked by their spines. Anointing is sometimes also called anting because of a similar behavior in birds.
Like opossums, mice, and moles, hedgehogs have some natural immunity against some snake venom through the protein erinacin in the animal’s muscular system, although it is available only in small amounts and a viper bite may still be fatal. In addition, hedgehogs are one of four known mammalian groups with mutations that protect against another snake venom, α-neurotoxin. Pigs, honey badgers, mongooses, and hedgehogs all have mutations in the nicotinic acetylcholine receptor that prevent the snake venom α-neurotoxin from binding, though those mutations developed separately and independently.
hedgehogs are omnivorous. They feed on insects, snails, frogs and toads, snakes, bird eggs, carrion, mushrooms, grass roots, berries, melons and watermelons. Berries constitute a major part of an Afghan hedgehog’s diet in early spring after hibernation. During winter Hedgehogs naturally hibernate. During hibernation, the body temperature of a hedgehog can decrease to about 2 °C (36 °F). When the animal awakes from hibernation, the body temperature rises from 2–5 °C (36–41 °F) back to its normal 30–35 °C (86–95 °F) body temperature.
Thes gestation period for new born Hedgehogs is 35–58 days Depending on the species. The average litter is 3–4 newborns for larger species and 5–6 for smaller ones. As with many animals, it is not unusual for an adult male hedgehog to kill newborn males. Hedgehogs have a relatively long lifespan for their size. Larger species of hedgehogs live 4–7 years in the wild (some have been recorded up to 16 years), and smaller species live 2–4 years (4–7 in captivity), compared to a mouse at 2 years and a large rat at 3–5 years. Lack of predators and controlled diet contribute to a longer lifespan in captivity (8–10 years depending on size). Hedgehogs are born blind with a protective membrane covering their quills, which dries and shrinks over the next several hours. The quills emerge through the skin after they have been cleaned, or it falls off.
More Events and National Days happening on 2 February
Sled Dog Day
Groundhog Job Shadow Day
Heavenly Hash Day
World Wetlands Day
World Wetlands Day occurs on February 2, every year to commemorate the date of the signing of the Ramsar Convention, on 2 February 1971, in the Iranian city of Ramsar on the shores of the Caspian Sea. This convention concerns the protection and maintaining of Wetlands. WWD was celebrated for the first time in 1997 and made an encouraging beginning. Each year, government agencies, non-governmental organizations, and groups of citizens at all levels of the community have taken advantage of the opportunity to undertake actions aimed at raising public awareness of wetland values and benefits in general and the Ramsar Convention in particular.
A wetland is a distinct ecosystem that is inundated by water, either permanently or seasonally, where oxygen-free processes prevail. The primary factor that distinguishes wetlands from other land forms or water bodies is the characteristic vegetation of aquatic plants,adapted to the unique hydric soil. Wetlands play a number of functions, including water purification, water storage, processing of carbon and other nutrients, stabilization of shorelines, and support of plants and animals. Wetlands are a biologically diverse ecosystem, serving as home to a wide range of plant and animal life. Whether any individual wetland performs these functions, and the degree to which it performs them, depends on characteristics of that wetland and the lands and waters near it. Methods for rapidly assessing these functions, wetland ecological health, and general wetland condition have been developed in many regions and have contributed to wetland conservation partly by raising public awareness of the functions and the ecosystem services some wetlands provide.
Wetlands occur naturally on every continent. The main wetland types are swamp, marsh, bog, and fen; sub-types include mangrove forest, carr, pocosin, floodplains, mire, vernal pool, sink, and many others. Many peatlands are wetlands. The water in wetlands is either freshwater, brackish, or saltwater. Wetlands can be tidal (inundated by tides) or non-tidal. The largest wetlands include the Amazon River basin, the West Siberian Plain the Pantanal in South America, and the Sundarbans in the Ganges-Brahmaputra delta.
The Ramsar Convention on Wetlands of International Importance especially as Waterfowl Habitat is an international treaty for the conservation and sustainable use of wetlands. It is also known as the Convention on Wetlands. It is named after the city of Ramsar in Iran, where the Convention was signed. Every three years, representatives of the Contracting Parties meet as the Conference of the Contracting Parties (COP), the policy-making organ of the Convention which adopts decisions (Resolutions and Recommendations) to administer the work of the Convention and improve the way in which the Parties are able to implement its objectives. COP12 was held in Punta del Este, Uruguay, in 2015. COP13 was held in Dubai, United Arab Emirates, in October 2018. The List of Wetlands of International Importance included 2,331 Ramsar Sites in May 2018 covering over 2.1 million square kilometres (810,000 sq mi).
The country with the highest number of Sites is the United Kingdom with 170, and the country with the greatest area of listed wetlands is Bolivia, with over 140,000 square kilometres (54,000 sq mi). The Ramsar Sites Information Service (RSIS) is a searchable database which provides information on each Ramsar Site.The Ramsar Convention works closely with six other organisations known as International Organization Partners (IOPs). Include the International Union for Conservation of Nature (IUCN), International Water Management Institute (IWMI), Wetlands International, WWF International and the Wildfowl & Wetlands Trust (WWT). These organizations support the work of the Convention by providing expert technical advice, helping implement field studies, and providing financial support. The IOPs also participate regularly as observers in all meetings of the Conference of the Parties and as full members of the Scientific and Technical Review Panel.
The United Nations Millennium Ecosystem Assessment determined that environmental degradation is more prominent within wetland systems than any other ecosystem on Earth. Constructed wetlands are used to treat municipal and industrial wastewater as well as stormwater runoff. They may also play a role in water-sensitive urban design.
From 1997 to 2007, the Ramsar Convention’s Web site has posted reports from more than 95 countries of WWD activities of all sizes and shapes, from lectures and seminars, nature walks, children’s art contests, sampan races, and community clean-up days, to radio and television interviews and letters to newspapers, to the launch of new wetland policies, new Ramsar sites, and new programmes at the national level. On February 2010 World Wetlands day was held in Korea under the Ramsar support. The day is really important, as more awareness is raised on the importance of taking care of wetlands.
French American Ornithologist, Naturalist, Hunter and painter John James Audubon (Jean-Jacques Audubon sadly passed away January 27, 1851. Born in Les Cayes in the French colony of Saint-Domingue (now Haiti) he is famous for having painted, catalogued, and described the birds of North America in a manner far superior to any before him. From his earliest days, Audubon had an affinity for birds and His father encouraged this interest in nature. Once in America Audubon went to a boarding house run by Quaker women. They taught him English, and He traveled with the family’s Quaker lawyer to
the Audubon family farm in what he considered a paradise. “Hunting, fishing, drawing, and music occupied my every moment, Studying his surroundings, Audubon quickly learned the ornithologist’s rule, which he wrote, “The nature of the place—whether high or low, moist or dry, whether sloping north or south, or bearing tall trees or low shrubs—generally gives hint as to its inhabitants.”His father hoped that the lead mines on the property could be commercially developed, as lead was an essential component of bullets. This could provide his son with a profitable occupation. Audubon met his neighbor William Bakewell, the owner of the nearby estate, whose daughter Lucy he married five years later. The two young people shared many common interests, and early on began to spend time together, exploring the natural world around them.
Audubon then set about studying American birds with the goal of illustrating his findings in a more realistic manner than most artists did then. He began conducting the first known bird-banding on the continent: he tied yarn to the legs of Eastern Phoebes and determined that they returned to the same nesting spots year after year. He also began drawing and painting birds, and recording their behaviour Audubon continued his bird studies and created his own nature museum, perhaps inspired by Charles Willson Peale, whose bird exhibits were considered scientifically advanced. Audubon’s room was brimming with birds’ eggs, stuffed raccoons and opossums, fish, snakes, and other creatures. He had become proficient at specimen preparation and taxidermy.With his father’s approval, Audubon sold part of his farm, including the house and mine, as they deemed the mining venture too risky. He retained some land for investment, then went to New York to learn the import-export trade, hoping to find a business to support his marriage to Lucy.
On October 12, 1820, Audubon went to Mississippi, Alabama, and Florida in search of ornithological specimens with George Lehman, a professional Swiss landscape artist. The following summer, he moved to the Oakley Plantation in the Felicianas, where he taught drawing. After a short stay in Cincinnati to work as a naturalist and taxidermist at a museum, Audubon traveled south on the Mississippi. By this time He was committed to find and paint all the birds of North America for eventual publication. His goal was to surpass the earlier ornithological work of poet-naturalist Alexander Wilson, whose work he used to guide him .Audubon called his future work “Birds of America”. He attempted to paint one page each day. Painting with newly discovered technique, He hired hunters to gather specimens for him. Audubon realized the ambitious project would take him away from his family for months at a time.
in 1824 Audubon returned to Philadelphia to seek a publisher for his bird drawings. He was rebuffed by many publishers, until he met Thomas Sully, one of the most famous portrait painters of the time and had earned the enmity of some of the city’s leading scientists at the Academy of Natural Sciences. He took oil painting lessons from Sully and met Charles Bonaparte, who admired his work and recommended he go to Europe to have his bird drawings engraved. So in 1826 Audubon took his growing collection of work to England, taking a portfolio of over 300 drawings. With letters of introduction to prominent Englishmen, Audubon gained their quick attention.
The British could not get enough of his images of backwoods America and its natural attractions. He met with great acceptance as he toured around England and Scotland, and was lionized as “the American woodsman.” He raised enough money to begin publishing his Birds of America. This monumental work consists of 435 hand-colored, life-size prints of 497 bird species, made from engraved copper plates of various sizes depending on the size of the image. They were printed on sheets measuring about 39 by 26 inches (660 mm). The work contains just over 700 North American bird species. The pages were organized for artistic effect and contrasting interest, as if the reader were taking a visual tour. The first and perhaps most famous plate was the Wild Turkey, which had been Benjamin Franklin’s candidate for the national bird. It lost to the Bald Eagle. Audubon also sold oil-painted copies of the drawings to make extra money and publicize the book.
Audubon soon had many fans including King George IV was also a subscriber to his book. London’s Royal Society recognized his achievement by electing Audubon a fellow. He followed Benjamin Franklin, who was the first American fellow. While in Edinburgh to seek subscriptions for the book, Audubon gave a demonstration of his method of propping up birds with wire at professor Robert Jameson’s Wernerian Natural History Association. Student Charles Darwin was in the audience. Audubon also visited the dissecting theatre of the anatomist Robert Knox. Audubon was a hit in France as well, gaining the King and several of the nobility as subscribers. Audubon returned to America in 1829 to complete more drawings for his magnum opus. He also hunted animals and shipped the valued skins to British friends. He was reunited with his family. After settling business affairs, Lucy accompanied him back to England.
He followed Birds of America with a sequel Ornithological Biographies. This was a collection of life histories of each species written with Scottish ornithologist William MacGillivray. The two books were printed separately to avoid a British law requiring copies of all publications with text to be deposited in Crown libraries, a huge financial burden for the self-published Audubon. Both books were published between 1827 and 1839. During the 1830s, Audubon continued making expeditions in North America. During a trip to Key West, a companion wrote in a newspaper article, “Mr. Audubon is the most enthusiastic and indefatigable man I ever knew…Mr. Audubon was neither dispirited by heat, fatigue, or bad luck”. he would draw during the day before returning to the field in the evening, a routine he kept up for weeks and months. In 1833, Audubon set forth from Maine accompanied by his son John, and five other young colleagues to explore the ornithology of Labrador. On the return voyage, the Ripley made a stop at St.George’s, Newfoundland and Audubon and his assistants documented 36 species of birds.
In 1839 having finished the Ornithological Biography, Audubon returned to the United States with his family. He bought an estate on the Hudson River (now Audubon Park). In 1842, he published an octavo edition of Birds of America, with 65 additional plates. It earned $36,000 and was purchased by 1100 subscribers. Audubon spent much time on “subscription gathering trips”, drumming up sales of the octavo edition, as he hoped to leave his family a sizable income. Audubon made some excursions out West where he hoped to record Western species he had missed, but his health began to fail, Until In 1848, he manifested signs of senility, his “noble mind in ruins.” He died at his family home on January 27, 1851. Audubon is buried, close to the location of his home, in the graveyard at the Church of the Intercession in the Trinity Church Cemetery and Mausoleum at 155th Street and Broadway in Manhattan. There is an imposing monument in his honor at the cemetery, which is the center of the Heritage Rose District of NYC.
Audubon’s final work was on mammals, the Viviparous Quadrupeds of North America, prepared in collaboration with his good friend Rev. John Bachman of Charleston, South Carolina. Bachman supplied much of the scientific text. The work was completed by Audubon’s sons and son-in-law and published posthumously. His son John did most of the drawings. Audubon’s influence on ornithology and natural history was far reaching. Nearly all later ornithological works were inspired by his artistry and high standards. Charles Darwin quoted Audubon three times in On the Origin of Species and also in later works. Audubon’s field notes were a significant contribution to the understanding of bird anatomy and behavior. Birds of America is still considered one of the greatest examples of book art. Audubon discovered 25 new species and 12 new subspecies. He was elected to the Royal Society of Edinburgh, the Linnaean Society, and the Royal Society in recognition of his extraordinary contributions to Natural history