Do birds show the presence of an exoskeleton?

Birds do not have an exoskeleton. They, along with mammals and reptiles, are vertebrates and possess an endoskeleton. An exoskeleton is the external covering or shell that provides structural support and protection for invertebrates like insects, spiders, and crustaceans. In contrast, vertebrates have an internal skeleton made of bone or cartilage, which provides structural support and protection to the body. Birds have a unique endoskeletal system that is lightweight, adapted for flight, and provides support for their body and feathers.