small birds can fly for less time but eagles can fly for long time

Dear student,
Smaller birds can fly for longer duration and longer distances by using a technique of bounding. Smaller birds can also hover for longer duration. Larger birds can hover for shorter periods of time. More energy is consumed by larger birds for flying longer distances but smaller birds can fly longer distances by bounding and can save energy for flight. Therefore smaller birds can fly for longer than eagles.

Regards

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Due to the large surface area of their wings they fly for larger time in air as compared with the birds having smaller wings
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