From IEEE Spectrum:
There are lots of innovative ways of landing robotic aircraft, from cables to parachutes to controlled crashes. Arguably, none of these ways are ideal, with ideal referring to an aircraft that makes a gentle landing just exactly where you want it. Say, right on the back of your hand.
Part of what makes this robot (under development at the Department of Aerospace Engineering at the University of Illinois at Urbana-Champaign) so cool is the fact that it uses flapping wings for extra maneuverability and, one has to assume, at least a little bit of thrust. This bio-inspired model (based on birds and bats) can reorient its wings while gliding, providing glide-phase control without a bunch of extra complicated and heavy actuators. It's highly effective control, too, and allows a thrown micro air vehicle (MAV) to make a pinpoint landing on the back of an outstretched hand: