Birds are very special animals that have particular characteristics which are common amongst all of them. For instance, all of them have feathers, wings and two legs. Similarly, all birds lay eggs and are warm-blooded. They are very essential for our environment and exist in different breeds.Birds are a group of warm-blooded vertebrates constituting the class Aves (/ˈeɪviːz/), characterised by feathers, toothless beaked jaws, the laying of hard-shelled eggs, a high metabolic rate, a four-chambered heart, and a strong yet lightweight skeleton.Birds help us in many ways, including: 

Pest control

Birds eat 400–500 tons of insects each year, including agricultural pests that would otherwise destroy crops, gardens, and other vegetation. For example, a single bird can save up to 24 pounds of coffee beans per acre each year from pest damage. Birds also help control the mouse and rat population. 

Pollination

Birds like hummingbirds and honeyeaters pollinate about 5% of the plants humans use for food or medicine, including bananas, coffee, cocoa, and vanilla. Without birds, many of these plants would not be able to produce seeds or fruits, and the diversity of our landscapes would be diminished. 

Seed dispersal

Birds eat seeds and excrete them, allowing plants to spread to new regions. 

Scavenging

Birds like crows and vultures scavenge carcasses, reducing the spread of diseases such as rabies and distemper. They also recycle nutrients back into the ground. 

Economic driver

Birds are an economic driver, with wildlife watchers spending more than $75 billion on travel, equipment, and other expenses each year. In the U.S. alone, birding has created more than 600,000 jobs and billions of dollars in employment income and tax revenue. 

Birds are also an integral part of the food chain and their loss can have cascading effects on the entire

ecosystem.