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What are wings of flying animals other than birds made of?
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- Compare the bat to the bird. Where is the bat's ulna? Are there any remnants of it? How is the bat's wing membrane supported by its skeleton? Be precise. Does a bird's wing work in the same way? How many metacarpals and digits ("fingers") does it have? (This is all just one question on comparing the bat to the bird)Do invertebrates without bones have something rigid for their muscles to pull against? How so?Most people know feathers are important for flight. What other functions do feathers serve?