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Their wings do not have the same bone structure as birds’ wings. The forewings are the paired wings that emerge from the mesothorax, whereas the hindwings emerge from the metathorax. In the case of insects, the wing is an extension of the exoskeleton seen in the mesothorax and metathorax. The structure of the bird’s feathers gives the bird its initial lift and later its real powered flight. The existence of flying feathers at the tips of the wings is another modification that allows them to fly.

They have air sacs in them and are mostly hollow bones to save weight. This is, in fact, one of the most important characteristics of birds that can fly. These bones, like the rest of the skeleton of a bird, are light. The humerus, ulna, and radius are the bones that make up their forelimbs. Birds’ wings are modified forelimbs in general. Winged insects may have originated from a terrestrial rather than an aquatic progenitor, according to phylogenomic studies.Īnalogous structures may not have to be of the same structure, as seen in the example.

The paranotal hypothesis proposes that their wings evolved from the paranotal lobes of the thoracic terga, according to one prevalent theory. The origins of insect flying are unknown.