ANATOMY

Detailed explanation-1: -They have special air sacs in addition to their lungs, with hollow bones that allow these gasses to flow around the body more easily. This means that one bird breath goes further and does more work than one mammal breath.

Detailed explanation-2: -What are the different adaptations of birds for flying? The body of the birds is adapted for flying. Birds have a streamlined body and hollow bones that make their bodies lightweight. The light chest muscles help in the movement of the wings.

Detailed explanation-3: -Alveoli are tiny air sacs present in the lungs that aid in the transport and exchange of gases. Adaptation of alveoli: The alveoli present in the lungs have thin walls composed only of a single layer of cells in order to minimize the diffusion distance. Their walls are moist which helps the gases to diffuse better.

Detailed explanation-4: -Air sacs are attached to the hollow areas in a bird’s bones. Essentially, their lungs extend throughout their bones. This helps birds take in oxygen while both inhaling and exhaling. This adds more oxygen to the blood, providing a bird with extra energy for flight.

Detailed explanation-5: -Air sacs serve as internal compartments which hold air and facilitate internal air passage to allow birds to have a continuous flow of large volumes of air through the lungs as a way to increase oxygen exchange capacity and efficiency.