Question

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2. Which types of bones are present in birds?​

Answer 1

Answer:

The bones of birds are lighter in weight than those of mammals. Some of the bones are hollow and actually act as part of the avian respiratory system. These bones, called pneumatic bones, include the skull, humerus, clavicle, keel, pelvic girdle, and lumbar and sacral vertebrae.

Answer 2

Explanation:

There are two special types of bones which make up the avian skeletal system: the pneu- matic and medullary bones. The pneumatic bones are important to birds for respiration. They are hollow bones which are connected to the bird's respiratory system and are important for birds to be able to breath

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