Bullet Train and Kingfisher (biomimetics)

Biomimetics used in the development of aerodynamic design, specifically in the re-engineering of bullet trains to eliminate turbulence when passing through tunnels. Original designs featured a fully-rounded front end which results in a pressure differential (sonic boom upon exiting tunnels).

Physics of Bird Flight (diagram)

Variations in Wing-Assisted Incline Running (WAIR) and Controlled Flapping Descent result in a variety of flight types and patterns which vary by species and size.

Wing-assisted incline running (WAIR)

The ability of birds to exploit complex 3D environments through adjustments in the rate, angle, and rotation of their wings and tail results in flight paths that cannot be replicated in traditional man-made flight.

http://jeb.biologists.org/content/214/14/2354.abstract