Most- Beautiful Birds part - 2

Warm-blooded birds have a one-way respiratory mechanism that is incredibly effective, feathers, a beak, no teeth, and a skeleton with numerous missing or fused together bones. Strong, hollow bones and strong flight muscles are characteristics of flying birds.
The majority of birds have the ability to fly. Birds' powerful hearts and effective respiratory mechanisms are essential for their ability to fly. Birds must consume a lot of food to fuel their flight since they use a lot of energy when flying.
Not all birds can fly, nor are all flying creatures birds. Throughout the Earth's history, flying has evolved numerous times on its own. Pterosaurs, flying reptiles from the period of the dinosaurs, flying mammals like bats,

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