Birds achieve flight control through complex, coordinated movements where different body parts can affect multiple ... a drone featuring morphing wings and tail that demonstrate remarkable stability.

“The head and parts of the bird’s wing still have brown juvenile feathers, but the black adult feathers have grown in on other areas of the wing and body. The tail feathers are ...

These small feathers on top of birds’ wings lay flat during normal flight but flare up in turbulence during landing. By attaching flexible plastic strips – “covert flaps” – to the top of ...