Dr. Lentink's group studies biological flight as an inspiration for engineering design. They focus on key biological questions which they probe with new engineering methods to find inspiration for innovative flying robots. Their comparative biological flight research ranges from maple seeds and insects to birds such as swifts, lovebirds, and hummingbirds. For in-depth biomechanics research they focus on bird flight. Their fluid mechanic research of dynamically morphing wings ranges from studying vortex dynamics to fluid-structure interaction. They apply their findings through robot designs centered on flying in complex cluttered environments under realistic atmospheric conditions.