14/12/2020
Squirrels are familiar to almost everyone. More than 200 squirrel species live all over the world, with the notable exception of Australia.
Differences Between Species
The tiniest squirrel is the aptly named African pygmy squirrel—only five inches long from nose to tail. Others reach sizes shocking to those who are only familiar with common tree squirrels. The Indian giant squirrel is three feet long.Like other rodents, squirrels have four front teeth that never stop growing so they don't wear down from the constant gnawing. Tree squirrels are the types most commonly recognized, often seen gracefully scampering and leaping from branch to branch. Other species are ground squirrels that live in burrow or tunnel systems, where some hibernate during the winter season.Ground squirrels eat nuts, leaves, roots, seeds, and other plants. They also catch and eat small animals, such as insects and caterpillars. These small mammals must always be wary of predators because they are tasty morsels with few natural defenses, save flight. Sometimes groups of ground squirrels work together to warn each other of approaching danger with a whistling call.Tree squirrels are commonly seen everywhere from woodlands to city parks. Though they are terrific climbers, these squirrels do come to the ground in search of fare such as nuts, acorns, berries, and flowers. They also eat bark, eggs, or baby birds. Tree sap is a delicacy to some species.Flying squirrels are a third, adaptable type of squirrel. They live something like birds do, in nests or tree holes, and although they do not fly, they can really move across the sky. Flying squirrels glide, extending their arms and legs and coasting through the air from one tree to another. Flaps of skin connecting limbs to body provide a winglike surface. These gliding leaps can exceed 150 feet. Flying squirrels eat nuts and fruit, but also catch insects and even baby birds.
Breeding
Whether they dwell high in a tree or in an underground burrow, female squirrels typically give birth to two to eight offspring. Babies are blind and totally dependent on their mothers for two or three months. Mothers may have several litters in a year, so most squirrel populations are robust.
Squirrels are nimble, bushy-tailed rodents found all over the world. They belong to the Sciuridae family, which includes prairie dogs, chipmunks and marmots.There are more than 200 species of squirrels, according to the Integrated Taxonomic Information System (ITIS), and they are categorized into three types: tree squirrels, ground squirrels and flying squirrels. These three categories are further broken down into many squirrel types, such as Albino, Mountain Tree, Antelope, Spotted, Grey, American Red, Douglas, Fox, Pygmy, Northern Flying, Southern, Arizona Gray, Idaho, Arctic Ground, Albert’s, Franklin, Richardson, Rock, White and Black squirrel.Since there are so many types of squirrels, they range greatly in size. The smallest squirrel is the African pygmy squirrel. It grows to 2.8 to 5 inches (7 to 13 centimeters) in length and weighs just 0.35 ounces (10 grams). The Indian giant squirrel is the world's largest known squirrel. It grows to 36 inches (1 meter) long and weighs up to 4 pounds (1.8 kilograms).Grey squirrels, commonly found in North America, are medium-size squirrels. They grow to 15 to 20 inches (38.1 to 50.8 cm) in length, with their tails adding an extra 6 to 9.5 inches (15.24 to 24.13 cm) to their length. They typically weigh about 1 to 1.5 pounds (0.45 to 0.68 kg).A group of squirrels are called a scurry or dray. They are very territorial and will fight to the death to defend their area. Mother squirrels are the most vicious when defending their babies.Some squirrels are crepuscular. This means that they are only active at dawn and dusk.Squirrels live on every continent except in Australia and Antarctica, according to the BBC. Tree squirrels typically live in wooded areas, since they prefer to live in trees. Ground squirrels live up to their names. They dig burrows, a system of tunnels underground, to live in. Some squirrels also hibernate in burrows during the winter to keep warm.Flying squirrels make their homes in tree holes or nests that are built into the crooks of branches. To get from tree to tree or from a tree to the ground, flying squirrels spread the muscle membrane between their legs and body and glide on the air. They can glide up to 160 feet (48 m), making it look like they can fly.On average, squirrels eat about one pound of food per week. Many people think that squirrels only eat nuts, but this isn't true. Squirrels are omnivores, which means they like to eat plants and meat. Squirrels mainly eat fungi, seeds, nuts and fruits, but they will also munch on eggs, small insects, caterpillars, small animals and even young snakes.A female carries her young for a gestation period of 29 to 65 days, depending on the size of the species; smaller squirrels have shorter gestation periods, according to the University of Michigan's Animal Diversity Web. Mothers give birth to two to eight offspring at one time. Babies are called kits or kittens and are born blind. They depend on their mothers for around two or three months. After seven to eight weeks, the young are weaned. When the kits leave the nest, they don't travel farther than 2 miles from home, according to the Massachusetts Department of Wildlife and Fisheries. Some species of squirrel have new litters every few months or as little as twice per year.According to the International Union for the Conservation of Nature's Red List, these species are endangered: San Joaquin antelope ground squirrel, woolly flying squirrel, Sipora flying squirrel, Mentawi flying squirrel, Siberut flying squirrel, smoky flying squirrel, Vincent's bush squirrel, Baja California rock squirrel, Idaho ground squirrel, Perote ground squirrel, fraternal squirrel and Mearns' squirrel. The Namdapha flying squirrel is critically endangered.Squirrels have four teeth in the front of their mouth that constantly grow throughout their lives. This ensures that their teeth don't wear down to nubs from gnawing on nuts and other objects. These rodents have remarkable little bodies. For example, a squirrel has padded feet that cushions jumps from up to 20 feet (6 meters) long. Their eyes are high on their head and placed on each side of the head so they can see a large amount of their surroundings without having to turn their head. They are also fantastic runners. Squirrels can run 20 mph (32 kph).The gray squirrel (Sciurus carolinensis) isn't just gray. It comes in a variety of colors, such as white, gray, brown and black. These little squirrels are great at planting trees. They bury their acorns, but forget where they put them. The forgotten acorns become oak trees.Football (or soccer as the game is called in some parts of the world) has a long history. Football in its current form arose in England in the middle of the 19th century. But alternative versions of the game existed much earlier and are a part of the football history.The first known examples of a team game involving a ball, which was made out of a rock, occurred in old Mesoamerican cultures for over 3,000 years ago. According to the sources, the ball would symbolize the sun and the captain of the losing team would be sacrificed to the gods.The first known ball game which also involved kicking took place In China in the 3rd and 2nd century BC under the name Cuju. Cuju was played with a round ball on an area of a square. It later spread to Japan and was practiced under ceremonial forms.Other earlier variety of ball games had been known from Ancient Greece. The ball was made by shreds of leather filled with hair (the first documents of balls filled with air are from the 7th century). In the Ancient Rome, games with balls were not included in the entertainment on the big arenas, but could occur in exercises in the military. It was the Roman culture that would bring football to the British island (Britannica). It is, however, uncertain in which degree the British people were influenced by this variety and in which degree they had developed their own variants.The most admitted story tells that the game was developed in England in the 12th century. In this century, games that resembled football were played on meadows and roads in England. Besides from kicks, the game involved also punches of the ball with the fist. This early form of football was also much more rough and violent than the modern way of playing. An important feature of the forerunners to football was that the games involved plenty of people and took place over large areas in towns (an equivalent was played in Florence from the 16th century where it was called Calcio). The rampage of these games would cause damage on the town and sometimes death. These would be among the reasons for the proclamations against the game that finally was forbidden for several centuries. But the football-like games would return to the streets of London in the 17th century. It would be forbidden again in 1835, but at this stage the game had been established in the public schools.It took, however, long time until the features of today’s football had been taken into practice. For a long time there was no clear distinction between football and rugby. There were also many variations concerning the size of the ball, the number of players and the length of a match.The game was often played in schools and two of the predominant schools were Rugby and Eton. At Rugby the rules included the possibility to take up the ball with the hands and the game we today know as rugby has its origin from here. At Eton on the other hand the ball was played exclusively with the feet and this game can be seen as a close predecessor to the modern football. The game in Rugby was called “the running game” while the game in Eton was called “the dribbling game”.An attempt to create proper rules for the game was done at a meeting in Cambridge in 1848, but a final solution to all questions of rules was not achieved. Another important event in the history of football came about in 1863 in London when the first Football association was formed in England. It was decided that carrying the ball with the hands wasn't allowed. The meeting also resulted in a standardization of the size and weight of the ball. A consequence of the London meeting was that the game was divided into two codes: association football and rugby.The game would, however, continue to develop for a long time and there was still much flexibility concerning the rules. For one thing, the number of players on the pitch could vary. Neither were uniforms used to distinguish the appearance of the teams. It was also common with players wearing caps – the header was yet to be a part of the game yet. Further reading: The development of football rules.Another important difference at this stage could be noticed between English and Scottish teams. Whereas the English teams preferred to run forward with the ball in a more rugby fashion, the Scottish chose to pass the ball between their players. It would be the Scottish approach that soon became predominant.The sport was at first an entertainment for the British working class. Unprecedented amounts of spectators, up to 30,000, would see the big matches in the late 19th century. The game would soon expand by British peoples that traveled to other parts of the world. Especially in South America and India would the interest in football become big.Football clubs have existed since the 15th century, but unorganized and without official status. It is therefore hard to decide which the first football club was. Some historians suggest that it was the Foot-Ball Club formed 1824 in Edinburgh. Early clubs were often formed by former school students and the first of this kind was formed in Sheffield in 1855. The oldest among professional football clubs is the English club Notts County that was formed in 1862 and still exists today.An important step for the emergence of teams was the industrialization that led to larger groups of people meeting at places such as factories, pubs and churches. Football teams were established in the larger cities and the new railroads could bring them to other cities.
