Question

Which feature is unique to birds?​

Answer 1

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• All of these unique features – feathers, wings, a beak, hollow, fused bones and air sacs – are what give birds their amazing abilities.

Answer 2

The most unique feature about birds is their feather.

• With roughly 9,000 known living species, birds make up a diversified class of animals (Aves) that includes creatures as disparate as small, darting hummingbirds and 8-foot-tall, flightless ostriches.
• Birds share a number of traits with other kinds of animals, along with skeletal vertebrae containing a spinal cord, a four-chambered heart, plus warm-bloodedness.
• It is generally recognised that birds originated from reptile dinosaurs. Other aspects of birds are distinctive or substantially distinctive.
• Every surviving species of bird has feathers, which distinguishes Aves from every other type of animal.
• As highly modified scales, feathers are formed of keratin, the same protein that gives other animals' hair and nails their shape.
• In addition to being essential for flying, feathers also provide warmth, and protection from the weather, and, in many species, help males attract females.

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