> It's much easier to build an airplane to fly than a bird. Not really. You could probably put together a flapping bird toy (can buy these mass manufactured t

> It's much easier to build an airplane to fly than a bird. Not really. You could probably put together a flapping bird toy (can buy these mass manufactured too) in about a couple of months of trial and error. Not quite as sophisticated as feathers but the principles are the same. You probably couldn't build an airplane.