Most birds produce substantial upward force—aka ... hummingbird’s hovering ability lies in the near symmetry of its wing motion, which allows it to produce lift during the upstroke as well ...

A piece from the American Institute of Physics points out that Gentoo penguins are the fastest swimming birds in the world ... it solves for the motion of the wing and the thrust, lift, and ...

They also enabled the evolution of other creatures like reptiles, birds, and mammals by serving ... a map of how fly muscles puppeteer the motion of the wing hinge to create agile aerodynamic ...