This means that the condor doesn’t have to generate nearly as much lift as a reindeer would. The condor’s complex arrangement of skeleton, wings, and feathers allows it to stay aloft for hours at a ...

That presents more trade-offs: With longer wings, you can fit a bigger engine underneath each one. But the reindeer couldn't do any sharp turns. Smaller wings means using a smaller engine ...

This means that the condor doesn't have to generate nearly as much lift as a reindeer would. The condor's complex arrangement of skeleton, wings, and feathers allow it to stay aloft for hours at a ...