Tag: nature

Posted in Science & Nature

Badass Weapons Of Nature: Long-tailed Weasel

Posted on by Jinavie

Long-tailed weasels are ferocious predators found in North America that likes to stalk its prey and pounce it with lightning speed. With small prey such as mice, the weasel will wrap its long body around the prey and then crush the head with a strong bite. As the weasel is very slender and sleek, it can easily dig into burrows to hunt hiding animals by crushing its skull, or to add variety, ripping out the windpipe.

Although it usually preys on small rodents, the long-tailed weasel is also known to fearlessly attack much larger animals such as birds and rabbits. As wild rabbits tend to be bulkier (sometimes even ten times larger) than the weasel, it cannot use its characteristic hunting style. To overcome this difficulty, these weasels have developed a strange behaviour that zoologists have labelled the Weasel War Dance. The War Dance (NB: two videos on what it looks like) is a chaotic set of movements where the weasel runs left and right frantically, jumping and flipping upside-down and almost appearing insane. This type of behaviour is observed in other species of weasels and ferrets when they are excited, but few use it as a hunting tool.

It has been observed that when the long-tailed weasel performs a War Dance in front of a rabbit, the rabbit becomes dazed and enters a trance-like state. It is possible that the chaotic and confusing movements disorient the rabbit. Once the rabbit has been disabled, the weasel promptly jumps on the rabbit’s back and delivers a powerful bite to the back of the neck, instantly killing the rabbit.
Wild weasels and stoats practise this skill by playfully ambushing each other when they are young.

Long-tailed weasels, despite their cute appearance, are notorious for their vicious temper. Being a carnivore that prefers fresh meat, it actively hunts and collects food. Despite seeking fresh food, the weasel also exhibits a curious behaviour of storing carrions, which is often only eaten in times of food shortages. This behaviour leads to the weasel going on killing sprees just because they can. Long-tailed weasels have also been observed lapping up blood from the wounds they inflict, and enjoys making their nest from the fur of their victims.

Posted in Science & Nature

Badass Weapons Of Nature: Roadrunner

Posted on by Jinavie

Roadrunners are medium-sized birds that grow to about 60cm and found in desert environments. They prefer walking or running (top speed 27km/h) to flying and have been portrayed as Road Runner in Looney Toons. In the cartoon, the bird is shown as a witty, intelligent bird that easily runs away from its predator. In real life, the roadrunner is a much more formidable animal.

Although it usually feeds on lizards and insects, roadrunners also enjoy feasting on rattlesnakes. Thanks to its quick speed, the thin bird can swiftly dig its beak into the rattlesnake before it can retaliate with its venomous bite. What happens next is quite surprising.
With its prey secured on its beak, the roadrunner promptly begins whipping its head around, bashing the snake to the ground in a circular motion. This whip-like attack causes the snake to lose consciousness or even die from the sheer impact and rotational force, essentially becoming tenderised. This deadly move has been named by ornithologists as the Centrifugal Slam. The roadrunner does this until it is certain the snake cannot attack back, then swallows it whole. As snakes tend to be longer than the bird, roadrunners are often found running around the desert with a long piece of tail dangling from its beak, the head being slowly digested in the bird’s stomach. 

Roadrunners are also known to eat horned lizards (spiked lizard that shoots blood from its eyes to deter predators), tarantula hawk wasps (giant wasp that defeats tarantulas to lay eggs inside it, with no other known predators) and even flying birds. As mentioned before, roadrunners do not fly unless in an emergency. So to hunt flying birds, they simply run, jump and Centrifugal Slam the living daylight out of the unfortunate prey.

image

Posted in Science & Nature

Praying Mantis

Posted on by Jinavie

The praying mantis is sometimes considered a symbol of ultimate female empowerment. After mating, it has been observed that the female would immediately proceed to kill the male she just mated with and eat his corpse, head first.
However, one thing that is less known is that this act – known as sexual cannibalism – occurs almost exclusively in captivity. This is because in the wild, a male runs off quickly after mating to avoid a grim fate. The female, with a massive appetite after the tiring act of copulation, looks for a source of nutrients to upkeep her pregnancy. As in a captive environment the male cannot run far and the female cannot hunt easily, she opts to eat the male as this is more beneficial for her. Furthermore, as mantises have very sharp vision, it is highly likely that the observing scientists (giant, towering figures dressed in white) will intimidate the female mantis. The anxiety caused by the observation would thus make the female act more violently.

The theory that lab intervention caused sexual cannibalism was proven when mantises stopped cannibalising after being fed ad libitum (until they were full). In fact, the female would carefully observe the courtship dance of the male and decide whether he is worthy of mating. This courtship dance also has the effect of switching the female’s priorities from feeding to mating.

It has also been suggested that females may choose to eat the males they do not deem worthy (before mating), or that the males are sacrificing themselves to improve the chance of fertilisation. This is supported by evidence of decapitated male mantises copulating more vigorously and mounting the female for much longer periods. 

In other words, male submissiveness can be a factor in reproductive success.

Posted in Psychology & Medicine

Monkeynomics

Posted on by Jinavie

Money is without a doubt a human invention. There are no recorded cases of any animal using an inanimate object to standardise the value of items and establish a non-bartering economy. Since childhood we learn of the value of money and how it can be used to purchase goods and services. In fact, money can be considered one of the fundamental pillars of human society that makes the world go round.

However, scientists have discovered that a currency system may not be such a novel system after all. In an experiment, a group of capuchin monkeys were given silver disks and were shown how they could use the disks as payment for a treat. Within a few months time, the monkeys realised that the disks had inherent value and began acting just like humans with money.

For example, they did not act in the standard way of operant conditioning (i.e. performing an action results in a reward), but responded to market forces in an accurate manner. If the “price” rose, their demand for treats would fall (i.e. buy less) and vice versa – following the law of demand that modern economics is based on. They even learnt to save the “money” to afford treats.
In a similar experiment with chimpanzees, it was found that chimps were even quicker in learning the concept of money and even learnt how to use smaller denominations of currency. 

Things started to get interesting when a certain monkey sneaked into the chamber storing the “coins” and threw it into the communal cage, quickly escaping before the researchers came back. This was the first recorded case of a monkey bank robbery. 
While this was happening, it was also observed that one male monkey was giving a female monkey a coin. The researchers wondered if this was an act of altruism or wooing, but soon discovered that the female monkey would receive the coin then have sex with the male, then later use the coin to buy food. The introduction of money immediately led to the invention of prostitution.

Posted in Science & Nature

Animal Hypnotism

Posted on by Jinavie

Animals can be hypnotised just like humans. Strictly speaking, it is not hypnotism per se but more of a trance or putting the animal to “sleep”. An animal in trance is in a state of complete relaxation and is immobile, staying still as if it is sleeping as its heart rate and breathing slows. After a certain amount of time, the animal wakes up and acts as if nothing happened.

For example, flipping a rabbit on its back causes it to stay still. It merely twitches its nose but its limbs are completely stiffened. An alligator shows the same response when flipped.
A pheasant can be put into trance if its stomach is rubbed and an iguana falls asleep when stroked on the head as the heat sensing organs are activated and they feel relaxed.
When stroked on its most sensitive part, the nose, a shark freezes from the intense sensation (considering a shark dies if it stops swimming, this must be quite a pleasurable feeling for the shark).
If you turn a lizard on its back and rub its stomach, its diaphragm and respiratory organs are compressed and oxygen supply is limited. This causes the lizard to “turn off”, falling into a trance.

These strange responses are most likely a survival instinct. For example, if a rubber hose with a knot on the end is held in front of a mouse, it will stay absolutely still. This is because it mistakes it for a snake and is frozen from fear. Also, predators such as snakes focus their vision around movement sensing and thus are blind to immobile objects. Similarly, rabbits and alligators mentioned above are playing dead to avoid danger.

Unfortunately, this instinct produces the opposite effects sometimes. Chickens are a good example.
When you press a chicken’s head against the ground and draw straight lines in front of it, it suddenly goes quiet as if possessed. Even after taking off the hand, it stays still. This technique was devised to make the process of cutting off the chicken’s head an easier task. Also, a chicken can be put into trance by gently tucking its head under its wing and then swinging the whole chicken side to side about 10 times. A turkey can be put to sleep the same way.

Posted in Science & Nature

Water Bear

Posted on by Jinavie

A water bear, also called a tardigrade, is actually an insect and not a bear. The nickname is due to its slow, bear-like gait. It ranges in size from 0.1 to 1.5mm and resembles a short caterpillar with eight legs.
The reason for the water bear’s fame is its amazing survivability. In short, a water bear can live anywhere.

Water bears are capable of cryptobiosis. This can be seen as an extension of hibernation and it is an organism’s ability to lower its metabolism to near-death rates in order to survive a harsh environment. In this state, a water bear can survive for indefinite amounts of time.

Why is cryptobiosis useful? The answer can be found from the water bear’s natural habitats. The water bear is found on the highest point of the Himalayas, the deepest oceans, hot springs and virtually any location from the North Pole to the South Pole. It can survive temperatures from 151°C to minus 273°C, the intense pressures in deep seas and even vacuum states.
Furthermore, water bears can survive in space. A recent experiment by NASA on the International Space Station found that not only can they live in space, but they also mated and laid eggs that later hatched. They can even survive heavy doses of radiation and toxic chemicals.

Ergo, if a cockroach can survive a nuclear war, water bears can survive even if the Earth was split in two. If we took a leaf out of the water bear’s book and lead a slower life, could we live a longer and happier life?

Posted in History & Literature

Flower Language

Posted on by Jinavie

Roses are the most common flowers used in modern society to profess one’s love. However, many people do not know the true meaning behind each flower. For example, every colour has a different meaning for roses.

  • Red rose: true love, passion
  • White rose: eternal love, innocence
  • Black rose: death, farewell
  • Yellow rose: friendship, jealousy, betrayal
  • Pink rose: grace, gratitude, youth
  • Mix of red and white roses: unity

As seen from above, a rose can mean love, friendship or even separation. It is also important to note that roses are traditionally given as a bouquet of one, six, dozen or any multiple of six. 
The following is a list of common flowers and what they symbolise:

  • Acacia: secret love
  • Bellflower: thinking of you
  • Cherry blossoms: beautiful mind, purity
  • Chrysanthemum: peace, love, mourning (used in funerals)
  • Cosmos: forever, devotion
  • Daffodil: Chivalry, respect, unrequited love
  • Daisies: innocence, modesty, beauty
  • Edelweiss: memories of an important person
  • Hibiscus: rare beauty
  • Lavender: silence, devotion
  • Lilac: memories of youth, first love
  • Lily: innocence, chastity, purity
  • Magnolia: unrequited love
  • Pansies: memories of love
  • Sunflower: happiness
  • Tulip: declaration of love (red), hopeless love (yellow), broken heart (white)
  • Violet: faithfulness

Posted in Life & Happiness

The Ant And The Grasshopper

Posted on by Jinavie

Once upon a time, there lived an ant and a grasshopper in the forest.
In the hot summer, the ant worked hard under the burning sunlight.
But the grasshopper spent all of his time playing on his instrument and having fun instead of working.
The ant was envious of the grasshopper, but on the other hand he pitied him.

One day, the grasshopper asked the ant: “You should rest a bit. It is important to work hard, but you should also think of your health.”
The ant, in a fit of rage, said: “You have no right to say that. The summer will not last forever and there is a finite supply of food in the forest. If you do not work hard now to gather food, everyone else will take it and you will die in the winter. To be happy in the future you must endure the pain of the present. I worry for your future.”
“If you have to live a hard present for a happy future, what meaning does your life have? Food does not define happiness.”
“That is just wishful thinking of the poor. A day will come when you will pay dearly for your lack of reality.”

And time passed until winter came. The winter brought a merciless cold snap and the forest quickly froze over.
The ant was right. The grasshopper – with no food or shelter – could not fight the cold and soon froze to death. As his body became more and more rigid, he thought to himself: “Well, I enjoyed my youth and had a happy time, so I have no regrets at least.”

The ant had enough food stored up and so he could live in his burrow without starving to death.

In his cold, damp, dark burrow he spent a lonely time, extending his miserable life just a little bit longer.
After a month of enduring it, he could not bear the continuous cold and eventually froze to death.

All is vain in the face of nature. Instead of just worrying about the future, one must also invest in the past and present to lead a complete life of happiness.

Posted in Science & Nature

Forecast

Posted on by Jinavie

When the weather forecast says today will be sunny, it always seems to rain (and vice versa). In fact, according to a US study, forecasts are sometimes less accurate than flipping a coin. If not even professionals can accurately predict the weather, can ordinary people like you and I do it?
The key to this is observation. By carefully studying your surroundings, you can look in to the future.

There are many signs before rain comes. For example, if the sunset is unusually clear or if a mountain far away looks smaller or hazy then it is very likely that it will rain the next day. If you see a rainbow in the morning it suggests rain is coming from the west. On hot days without any wind, it is likely there will be a heavy shower.
Animals are also adept at telling the weather. Frogs crying, worms coming out and swallows flying low are all signs that the air is humid and rain is coming. Swallows are especially accurate, as they fly low to catch insects that cannot fly high due to the humidity weighing them down.
If you are at the beach and there is a swarm of jellyfish, avoid going out to sea. Jellyfish near the coastline is a premonition for a storm.

If a more accurate weather prediction is required, the most precise method is cloud observation. If you study them carefully they comprise three tiers, with some clouds rising vertically.

Clouds in the highest level

  • Cirrus: Very fine, white feathery clouds that almost look combed over. If these clouds are curvy and organised the weather will be fine, but if they appear banded or spread chaotically they can gather and form rainclouds and start a shower.
  • Cirrostratus: Looks like a veil of cotton curtaining the sky. They cause halos around the sun and moon, which is a sign of imminent rain.
  • Cirrocumulus: Looks like a spread of seashells on a beach. If you find these clouds over a beach in winter, it will rain soon.

Clouds in the middle level

  • Altocumulus: Either appears as an ordered stream of rounded clouds, or looks like a herd of sheep. If these clouds shrink in size, the weather gets better (and vice versa).
  • Altostratus: Shaped like streaks of veil across the sky. They are often light grey or very dark. If they become thicker or sink to a lower level, it is a sign that the weather will be cloudy with a chance of rain.
  • Nimbostratus: The common “raincloud”, bringing rain and snow.

Clouds in the lowest level

  • Stratocumulus: Clumps of clouds that appear in layers without clear boundaries. You can see clear sky through gaps between them. If you can see clouds that were cumulus in the afternoon changing to stratocumulus by sunset, the weather will be great the next day.
  • Stratus: Looks like fog covering a low sky. If they come in the morning and disappear by night, that day will be clear. However, if they lie between altostratus and a canyon, it will rain.

Clouds that rise vertically

  • Cumulus: Fluffy clouds that you can see on a clear sky. If they disappear by evening the next day is clear, but if they can be seen late at night or float north-westerly, it is a sign that it will rain.
  • Cumulonimbus: Massive cloud pillars that rise to the level of cirrus. It always brings heavy rain and sometimes a thunderstorm.

If you know how to observe and analyse cloud patterns, you can predict the weather even when stranded on a desert island.

Posted in Science & Nature

Sparrow

Posted on by Jinavie

When asked “name a bird you see often”, most city-dwellers would name a pigeon or a sparrow. These two birds are the most famous urban birds that are closely associated to humans. The sparrow, being very opportunistic and adaptable, have easily taken over environments around the globe, especially those where European settlements were made. Nowadays, they are regarded as a pest due to their foraging of agricultural crop and the spread of disease. However, citizens still view them in a positive light, especially in parks or gardens where the sparrows appear to be a “symbol of nature” (ironically, they are likely an invading species driving away native birds).

One interesting fact regarding sparrows that most people do not seem to know is how to differentiate a male and female sparrow.
A female sparrow has very soft, brown feathers, with no marked features.
A male sparrow has areas of dark brown or black feathers, especially on the head and eyes. Its beak is also darker than the female.
If one observes carefully at sparrows, they can notice that the two behave slightly differently as well.