Research Results For 'Rearing'

AVIARY

An aviary is a building, or a portion of a building, netted off, or a large cage designed for keeping, breeding and rearing birds. Aviaries appear to have been used by the Persians, Greeks, and Romans, and are highly prized in China. In England they were in use at least as early as 1577, when William Harrison refers to 'ourcostlie and curious aviaries.' An aviary may be simply a kind of very large cage; but the term usually has a wider scope than this.
Research Aviary

MOUNTAINS

Mountains are often classified according to their mode of formation: Fold
mountains; Block mountains; Residual mountains; Volcanic mountains.

High mountain chains such as the Himalayas, Andes, Alps, and Rockies are known as new fold mountain systems. The term 'fold' is a reference to the way in which such mountains have been formed. Throughout millions of years slow movements of the earth's crust have caused these
mountains to be raised. The movements which have resulted in mountain buildings were not, however, vertical uplifts. They were primarily horizontal movements, the effect of which was to cause the crust of the earth to 'wrinkle', in a similar way to which a tablecloth wrinkles if it is pushed along the table. The arched or upraised parts of the folds are known as anticlines and the troughs as synclines. These folds can vary greatly in size. Mountain building is undoubtedly due to some deep-seated cause. For a long period the most simple explanation was that folding was entirely due to the cooling and contraction of the earth, so that the crust, already cold and shrunken, had to wrinkle to fit itself to the still cooling and contracting 'core'. One of the objections advanced against this theory is that the amount of shrinking necessary to account for the Himalayas, Alps, etc., seems to be greater than the mere contraction of the earth would allow. While the theory of contraction cannot be completely rejected, serious consideration must be given to the more recent explanations of mountain building. For instance, Wegener suggests that mountain building may be due to the 'wrinkles' produced by the drifting of a continental mass, e.g. that the Alps were formed by the northward drift of the African continent towards the more stable blocks of Central Europe. As the African mass drifted slowly northward the zone between it and the European mass became narrower, and the land was raised into high ridges or folds. The raising of the Alps was accompanied by the formation of the deep trough which contains the Mediterranean Sea. The same hypothesis would account for the building of the Himalayas and the depression of the Indo-Gangetic trough by the northward drift of the Deccan mass.

During the physical history of the earth, mountain building appears to have proceeded more actively at some periods than others. Fold mountains are, therefore, not all of the same age. The newest group of fold mountains include the Himalayas, Alps, Rockies, and Andes. During an earlier period of folding (the Carboniferous) the Pennines, Appalachians, the Cape Ranges of South Africa, and the Dividing Range of Australia were uplifted. A still earlier period of folding accounted for the original mountains of Scotland and Norway, of which the present mountains are merely the worn down stumps. The older fold mountains, which have been subjected to the forces of denudation (such as the weather, rivers, glaciers, etc.) for long geological periods, are much lower and less rugged than the newer fold mountains. The term 'new fold' is applied to the mountain ranges which have been folded most recently, but they seem very old when their age in actual years is considered because they were uplifted many millions of years before historic time. Mountain building is a very long and slow process; and in the case of certain mountain chains, such as the Andes and the mountains of Japan, is probably still proceeding.

The new fold mountain systems of the world, except in such instances as the simple low folds of the Weald (South-east England), usually consist of high parallel ranges, the average height being well over 3000 metres. In the Himalayas' the highest peak rises to 8840 metres; in the Andes 7000 metres; in the Rockies 6000 metres; in the Alps to 4600 metres. Vast though these heights appear, the wrinkles of the earth's crust are only slight. The highest mountain in the world (Mount Everest) is about five miles high, so that on a globe of 40 cm, diameter it would protrude only 2.5 mm. Most of the active volcanoes are found in the neighbourhood of fold mountains, where the crust of the earth has been fractured during the process of folding. All around the Pacific Ocean there are many active and extinct volcanoes, as in New Zealand, the East Indies, Japan, and North, Central, and South America. Another belt of active volcanoes is associated with the fold mountains of the West Indies. The mountains of this type are characterised by ruggedness of relief in contrast to the smooth and rounded contours of mountain areas which have been subjected to weathering agents for long periods of time. This is obvious if pictures of the Alps and the Scottish Highlands are compared.

Mountains are effective climatic barriers, and the climates of regions on either side of a high mountain range are very different. For example, the coast lands of British Columbia have an equable climate and a heavy rainfall, while the lands to the east of the Rockies have an extreme climate and light rainfall. Again, the climate of the mountainous areas differs from that of the adjacent lowlands. The great mountain systems of the world are mainly important for their minerals, and, in the temperate zone, for their lumber. In the plateau regions of some mountain systems agriculture has been made possible by irrigation, and above the forests in temperate areas there are valuable alpine pastures. The swift streams of mountains are frequently sources of hydro-electric power, especially in countries which have no coal, such as Switzerland and Norway. In North America, the Western Cordillera provides gold, copper, lead, and silver, especially in the states of Nevada and Montana. The Andes provide tin and copper (Bolivia), gold and platinum
(Colombia), and silver (Peru). The Highlands of East Australia are important for copper and gold. The lumbering industry is specially important in British Columbia, Washington, and Oregon (soft woods), the Central American mountainous lands (hard woods), the Himalayan slopes (teak and sal), and the Scandinavian mountains (soft woods).

To provide food for the mining communities in inaccessible mountain areas, agriculture has been developed. There are numerous irrigation schemes in operation in most of the mountain states of the USA, e.g. at Salt Lake City in Utah. Similarly, the Andean states, e.g. Bolivia, grow small quantities of cereals in the plateau areas. Mountain pastures have been utilised most extensively for cattle rearing in Switzerland and Scandinavia. The vast central plateau of Asia is, owing to difficulty of access and climatic extremes, so isolated from other regions that very little development of any kind, on modern lines, has taken place. High mountain ranges are also barriers to communication, and so tend to separate peoples. Traffic across mountains is limited to the passes, which are often so high as to be snowbound in winter. Such ranges as the Alps, Andes, etc. can only be crossed with great difficulty or by expensive tunnelling.

It sometimes happens that movement of the earth's crust occurs along cracks or faults. Where such movement leaves a block of higher land standing between two areas of lower land, the highland is known as a 'Block Mountain' or horst. The Vosges and Black Forest Mountains are examples of such formations These mountains are usually very steep-sided, and often the summit levels are roughly the same.

When an area of highland remains standing above the general level after rivers and other natural agents have lowered the surface of the surrounding area, the name residual mountain is used. Sometimes such highlands are called 'mountains of denudation'. This term can usually be applied to the mountain ridges associated with 'dissected plateaux'. Included in this class are the mountain ridges of the Highlands of Scotland, the Sierras of Central Spain, and the Mesas and Buttes of the western plateau lands of the United States.

Mountains may be formed by volcanic material piled up around a crater, such mountains are popularly known as volcanoes.
Research Mountains

NEOLITHIC

The Neolithic period was the cultural period that lasted in south-west Asia from about 9000 to 6000 BC. and in Europe from about 4000 to 2400 BC and was characterised by primitive crop growing and stock rearing and the use of polished stone and flint tools and weapons.
Research Neolithic

PAEDOTROPHY

Paedotrophy is the art of rearing children.
Research Paedotrophy

PLAINS

A plain is an expanse of low and nearly level land. Some plains, such as the Fens of England, large parts of Holland, and extensive areas of Russia, are almost perfectly flat; but generally an extensive plain consists of wide, gently sloping valleys separated by low hills. Such a plain is termed ' rolling' or 'undulating'. Many plains look extremely flat when viewed from the top of the neighbouring hills, but on descending one finds numerous instances of steep gradients, the valley slopes of the streams which cross the plain.

Plains are not all of the same type. Some plains may have been formed by the wearing down of lands that were once much higher. Such areas are more correctly called 'peneplains', e.g. Finland, a lowland area of very old rock, the Hudson Bay lowlands, and Anglesey. Secondly, where layers of rock have not been folded but remain almost horizontal, extensive plains also occur. The Central Plains of the United States and the great plains of European Russia are in this group. Thirdly, plains may have been formed by the gradual accumulation of silt brought down by rivers. These are usually called alluvial plains. Good examples are the plain of North China, the Indo-Gangetic plain, the plains of Iraq, and much of the Amazon lowland. Some plains are the beds of old lakes. Rivers entering a lake deposit silt which is spread by the movement of the water over the lake floor. Such plains, though not large in size, are usually very fertile. Much of the great wheat land of Southern Manitoba is the bed of an old lake -lake Agassiz. The fertile plains of Hungary are of similar origin. Finally, some plains, such as the coastal plains of the United States from Chesapeake Bay to Florida, have been formed by the uplift of part of the sea floor bordering a continent.

The plains of the world tend to be areas of most advanced development and densest settlement. They are easier to cultivate than highland areas as the soil is usually deeper and more fertile. Hence the great plains, except where covered with large tracts of uncleared forest or occasional deposits of infertile soil, are important agricultural lands. Some plains, such as portions of Central Asia or of the Murray-Darling Basin, are too dry for successful agriculture. Unless irrigation is a practical possibility such plains are occupied by pastoral farmers engaged in rearing animals, and even the pastoral farmers sometimes have to bore wells for water, as in Hungary and in Australia. Where coal is found in or near plains, densely populated industrial centres usually develop, as in the North-Central United States. Movement is easy in all directions over lowlands, and rivers are generally slow and easily navigable, so that they are used as commercial highways. This is well illustrated by the United States, where the Mississippi and its tributaries provided the main lines of communication before the period when railways were developed.

STOVE HOUSE

In horticulture, a stove house is a structure used for the rearing of plants which require the steady maintenance of a high temperature. The heat is usually provided by hot water pipes, and humidity by placing shallow pans of water at intervals upon the hot pipes.
Research Stove House

BALWEN WELSH MOUNTAIN

The Balwen Welsh Mountain is a breed of Welsh mountain sheep. The Balwen has a base colour of black/ brown or dark grey, with a white blaze on the face, four white feet and a half white tail. The name Balwen is derived from the Welsh phrase Bal meaning white blaze. It is thought farmers over the years used the Balwen as landmarks on the hills as a means of recognizing ones flock. By whatever means, the Balwen has been preserved by the continued belief of committed enthusiasts that the Welsh Mountain is a 'sheep for all seasons'. For many years the Balwen was confined to an area of central Wales on the borders of the old counties of Cardigan, Brecon and Carmarthen. The catchment area of the river Tywi, north of Rhandirmwyn (now the Llyn Brianne Dam) was the breeding grounds for the Balwen sheep, and the ancestry of all Balwens can be traced back to the Tywi valley. The
Balwen Welsh Mountain Sheep is a small very hardy breed. They are easy to manage having very few health problems associated with many of the larger breeds. They have excellent feet requiring little attention and can get by with only the minimum of feeding at peak times of the year. The Balwen is an excellent mother, having very few lambing problems with plenty of milk capable of rearing twin lambs under the right circumstances.
Research Balwen Welsh Mountain
More information about Balwen Welsh Mountain

BEE

The bee is a four winged stinging insect of the order Hymenoptera. Bees form the super-family Apoidea of the sub-order Apocrita.

The most important member of the family is the common hive or honey bee (Apis mellifica). It belongs to the warmer parts of the Eastern Hemisphere, but is now naturalized in the Western. A hive commonly consists of one mother or queen, from 600 to 800 males or drones, and from 15,000 to 20,000 working bees, formerly termed neuters, but now known to be imperfectly-developed females. The last-mentioned, the smallest, have twelve joints to their antennae, and six abdominal rings, and are provided with a sting; there is, on the outside of the hind-legs, a smooth hollow, edged with hairs, called the basket, in which the kneaded pollen or bee-bread, the food of the larvae, is stored for transit.

The queen has the same characteristics, but is of larger size, especially in the abdomen; she has also a sting. The males, or drones, differ from both the preceding by having thirteen joints to the antennae; a rounded head, with larger eyes, elongated and united at the summit; and no stings. According to Huber the working-bees are themselves divisible into two classes: one, the cirieres, devoted to the collection of provisions, etc; the other, smaller and more delicate, employed exclusively within the hive in rearing the young.

The mouth of the bee is adapted for both masticatory and suctorial purposes, the honey being conveyed thence to the anterior stomach or crop, communicating with a second stomach in which alone a digestive process can be traced. The queen, whose sole office is to propagate the species, has two large ovaries, consisting of a great number of small cavities, each containing sixteen or seventeen eggs. The inferior half-circles, except the first and last, on the abdomen of working-bees, have each on their inner surface two cavities, where the wax, secreted by the bee from its saccharine food, is formed in layers, and comes out from between the abdominal rings.

Respiration takes place by means of air-tubes which branch out to all parts of the body, the bee being exceedingly sensitive to an impure atmosphere. Of the organs of sense the most important are the antennae, deprivation of these resulting in a species of derangement. The majority of entomologists regard their function as in the first place auditory, but they are exceedingly ssensitive to tactual impressions, and are apparently the principal means of mutual communication.

Bees undergo perfect metamorphosis, the young appearing first as larvae, then changing to pupae, from which the imagosor perfect insects spring. Whether the offspring are to be female or male is said to be dependent upon the contact or absence of contact of the egg with the impregnating fluid received from the male and stored in a special sac communicating with the oviduct, unfertilized eggs producing males. The further question whether the offspring shall be queens or workers is resolved by the influence of environment upon function. The enlargement of a cell to the size of a royal chamber and the nourishment of its inmate with a special kind of food appear to be sufficient to transform an ordinary working-bee larva into a fully-developed female or queen-bee.

The season of fecundation occurs about the beginning of summer, and the laying begins immediately afterwards, and continues until autumn; in the spring as many as 12,000 eggs may be laid in twenty-four days. Those laid at the commencement of fine weather all belong to the working sort, and hatch at the end of four days. The larvae acquire their perfect state in about twelve days, and the cells are then immediately fitted up for the reception of new eggs. The eggs for producing males are laid two months later, and those for the females immediately afterwards. This succession of generations forms so many distinct communities, which, when increased beyond a certain degree, leave the parent hive to found a new colony elsewhere. Thus three or four swarms sometimes leave a hive in a season. A good swarm is said to weigh at least three kilograms. Besides the common bee (Apis mellifica) there are the Apis fasciata, domesticated in Egypt, the Apis Ugustica, or Ligurian bee of Italy and Greece, introduced into England, etc.

The humble-bees, or bumble-bees, of which about forty species are found in Britain and over sixty in North America, belong to the genus Bombus, which is almost worldwide in its distribution. Of these species solitary females which have survived the winter commence constructing small nests when the weather begins to be warm enough; some of them going deep into the earth in dry banks, others preferring heaps of stone or gravel, and others choosing always some bed of dry moss. In the nest the bee collects a mass of pollen and in this lays some eggs. The cells in these nests are not the work of the old bee, but are formed by the young insects similarly to the cocoons of silk-worms; and when the perfect insect is released from them by the old bee, which gnaws off their tops, they are employed as honey-cups.

The humble-bees, however, do not store honey for the winter, those which survive until the cold weather leaving the nest and penetrating the earth, or taking up some other sheltered position, and remaining there until the spring. The first brood consists of workers, and successive broods are produced during the summer. The experiment of domesticating different kinds of wild bees has been tried with no satisfactory results. Some bees, from their manner of nesting, are known as 'mason bees,' 'carpenter bees,' and 'upholsterer bees.' Some of these bees (genus Osmia) cement particles of sand or gravel together with a viscid substance in forming their nests; others make burrows in wood. The leaf-cutter or upholsterer bee (genus Megachile) lines its burrow with bits of leaf cut out in regular shapes.
Research Bee

GOLDEN LION TAMARIN

The Golden Lion Tamarin or Golden Lion Marmoset (Leontopithecus rosalia) is a small monkey about 25 centimeters long excluding the tail, found in the coastal rain forests of Brazil. The golden lion tamarin is omnivorous, eating fruits, gum, nectar, insects, and small vertebrates and is diurnal and predominantly arboreal. They live in territorial family groups of one pair of sexually mature adults and their young, with the younger adults helping with rearing the very young. Destruction of the coastal forests during the 20th century and into the 21st century means the golden lion tamarin is now almost extinct, with perhaps less than 100 animals still in the wild in 2008.
Research Golden Lion Tamarin
More pictures of Golden Lion Tamarin

TURKOMAN

The Turkoman is a Turkmenistan/Iranian breed of horse based on the now extinct ancient Turkoman breed of horse. The modern Turkoman is a peculiarly shaped horse, extremely slender with almost no body fat due to their artificial rearing and feeding, and are bred for racing. They stand between 15 and 16 hands high and are any solid colour.
Research Turkoman

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