if there are no birds .essay in 500 words
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Answer:
Birds are special kind of animal species with certain specific characteristics that are common to all of them. All of them are feathered, winged, bipedal (meaning: having two legs), egg-laying, warm blooded, vertebrate animals belonging to the class Aves. They are an important part of the ecosystem and are present across the globe from the Arctic to the Antarctic.
Birds inhabit the environment that suits them and that is what separates the species found in Polar Regions from those in the Tropical Region. In spite of all the similarities that the bird species share, they have certain unique characteristics which differentiate them from others.
Birds may be of different sizes. They could be small as much as 2 inches (e.g. Bee hummingbird) to as big as 2.75 meters (like an Ostrich). Fossil records indicate the emergence of birds to as old as 160 million years ago.
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Some characteristics of modern birds are feathers, beak, egg-laying, high metabolic rate, four-chambered heart, light weight but strong skeleton. Wings which are actually evolved forelimbs help the birds in their flight. The unique digestive and respiratory system of the birds help them fly to great heights.
Some birds cannot fly, penguin is one such species. Certain birds are known to be highly intelligent like parrots and corvids, while some are capable of transmitting knowledge across generations. The way certain birds create very intricately woven and safe nests to preserve their eggs indicates the use of manufacturing skills they possess.
Birds are very closely connected with the environment. They are known to be intuitive about weather conditions that may prevail in the region much ahead than humans can predict it with any forecast methods and instruments. Their monitoring and careful examination is also used as an indicator of the weather conditions.
Presence of peacock symbolizes rain and good weather while owls, bats and vultures are said to indicate a bad, unpleasant weather in an area. Certain birds are kept near coal mines for the prediction of mine explosion, as birds are sensitive to the release of high levels of carbon monoxide beyond permitted limits and begin to die.
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Birds are social. Most communication happens through sounds that they make or singing that they do. They live in flocks, hunt, breed cooperatively and participate in social behaviors.
Birds incubate the eggs they lay and take longer care of the hatched birds as parents. Birds have the freedom to move anywhere they want and care for no boundaries of political or cultural divide except the suitability of the environment.
Many birds have been extinct due to hunting, poaching, disturbed ecological balance and many more are under constant threat of extinction. Even birds living in water like swans, ducks etc. have seen a drastic fall in numbers because of the pollutants like poisonous chemicals and pesticides being constantly added to the water bodies. Also birds living close to the river banks consume polluted water and die.
As birds are vital to the balance of this ecosystem, we must take adequate steps to preserve them providing them safe and clean habitat for survival.
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Can you imagine a world without birds? The benefits birds bring us aren't just cultural. Birds play an essential role in the functioning of the world's ecosystems, in a way that directly impacts human health, economy and food production - as well as millions of other species. Here's how...
Can you imagine a world without birds? The benefits birds bring us aren't just cultural. Birds play an essential role in the functioning of the world's ecosystems, in a way that directly impacts human health, economy and food production - as well as millions of other species. Here's how...
It might be a little extreme to say that we’d be wading knee-deep in invertebrates if birds disappeared – but maybe not that extreme. A recent study has shown that birds eat 400-500 million tons of insects a year. In China, two-thirds of the diet of House Swift Apus nipalensis consists of agricultural pests, and in forests across the Americas, Evening Grosbeak Hesperiphona vespertina becomes a superhero during outbreaks of Spruce Budworm, providing biological control worth $1,820 per square kilometre. Birds are so efficient that nest boxes have become a pest control practice throughout Europe.
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