In literature, birds are commonly viewed as signs of freedom while in flight, yet while they are entrapped in cages, they symbolize the struggle for freedom....
Bangladesh is a home of different kinds of birds where different various kinds of birds are found. They differ in size, color, and habit. Again, different kinds of birds are classified into different groups. They are singing birds, talking birds, game birds, tailor birds, migratory birds, domestic birds, wild birds etc. Generally, the birds are divided into two parts – one is seasonal bird and another is common bird. The cow is the most familiar and common bird in Bangladesh. It belongs to the class of teasing birds. It is very ugly to look at. Its voice is harsh too. The Cuckoo, the Doel, the Shayma and The koel are widely known as singing birds. The Cuckoo is noted for its melodious song. It comes at the advent of the spring for which it is called the harbinger of the spring. Doel is our National Bird. Mayna, Shalik, and the Parrot are called talking bird. They can imitate the voice of man when they are trained. The sparrow is another common tiny bird. It annoys us by chirping all the while. It is restless in nature. In summary, the birds play an important role to beautify our country.
Two groups have formed in the study of this question: those who believe birds are a direct result of dinosaurs and those who feel dinosaurs and birds must have had a common ancestor.
This is especially true in the writing of Aristophanes' Birds, from Aristophanes I: Clouds, Wasps, Birds, translated by Peter Meineck, published by the Hackett Publishing Company in Indianapolis, IN, in 1998....
Each country has a number of national emblems and Bangladesh is no different. The , or Kathal, is considered the national fruit as it is used in traditional cooking and the Water Lily is their national flower, as it can be found in water ways and ponds everywhere in the country. When it comes to the national bird of Bangladesh, a small but distinctive bird has made its way to the top, namely the Magpie Robin. And Bangladesh is proud to have this little bird as a national emblem, as can be seen in monuments and even on its currency.
New research shows that ravens can plan ahead for different types of events, and even resist the urge to take an immediate reward in favor of getting a better one in the future. These capacities are often considered the exclusive domain of humans and great apes, so their presence in birds comes as a surprise.
The , published today in Science, shows that ravens (Corvus corax) can anticipate the nature, time, and location of future events based on prior experiences. This is an important finding, and not just because of what it tells us about certain birds and how freakishly smart they are. It also tells us that ravens and great apes—animals who diverged from a common ancestor over 300 million years ago—acquired these sophisticated cognitive planning abilities traveling along very different evolutionary paths.
Animals that can’t plan ahead live in the moment, and act in accordance to immediate needs. Their lives are a flow of action and reaction, making it difficult, if not impossible, to think complex scenarios through. Animals that can anticipate the future, on the other hand, can use or build tools to perform a task, engage in bartering behaviors, and exert self-control. In , great apes have demonstrated these capacities, but . Corvids, a family of birds that includes ravens, have also demonstrated the ability to anticipate the future, but only .
The bird symbols of Canada's provinces and territories are:Anguilla: Mourning DoveArgentina: Rufous HorneroAustralia: Austria: Barn SwallowBahamas: Greater FlamingoBangladesh: the (Magpie Robin)Belgium: KestrelBelize: Bermuda: White-tailed TropicbirdBolivia: the Andean CondorBritish Virgin Islands: the Mourning DoveBurma (now known as Myanmar): the Burmese PeacockCanada: Common LoonThe Cayman Island: Cayman parrotChile: Andean CondorColombia: Andean CondorCosta Rica's national bird (since 1976): Cuba: Clay-coloured RobinDenmark: Mute SwanDominica: Dominican Republic: Palm-chatEcuador: Andean CondorEstonia: Barn SwallowFinland: Sacred (whooper) swan, Cygnus cygnusFrance: the unofficial national bird is the Gallic rooster.
In an effort to learn more about raven intelligence, researchers Can Kabadayi and Mathias Osvath from the Department of Cognitive Science at Lund University conducted a series of experiments in which five ravens (two male, three female) were put through four different tests. These experiments were done to see if ravens could use their bird brains to complete tasks they wouldn’t normally have to perform in the wild, namely using tools and bartering with humans. The tests were also done to see if ravens could make decisions for an event 15 minutes into the future, and over a longer timeframe of 17 hours. Finally, the researchers sought to test the birds’ self-control when making decisions for the future.
“It shows yet again how smart corvid songbirds can be even if they have a very different organization of their brains compared to primates and us humans,” said Nieder. “This is a fascinating case of so-called convergent evolution: similar intelligent behaviour, but based on very different brain structures.”
I know there isno mechanism to collect such a tax. I'm presenting these numbers simply topoint out the immoral, un-Matthew-25-like concentration of the earth's wealthin a few hands. This skewed distribution of wealth is a bit later in this essay.