In present world, birds have been evolved in to different shapes and sizes. It is a known fact that more than 10,000 bird species with different colors exist on the planet.
The different parts of birds include crown, bull, throat, breast, tarsus, tail, rump , and wing. Birds have different types of feet used for swimming, wading, climbing, perching and grasping.
The world's fastest Flyer bird is Peregrine Falcon and the slowest Flyer is American woodcock. The smallest bird is male bee humming bird with weight of 0.056 ounces and largest bird is North African Ostrich that weighs 345 lbs with a height of 9 feet.
It is estimated that more than 1.5 billion of Red – billed Queleas are available and the rarest bird species is po'ouli.