Using biomimicry to replicate how birds land on tree branches and balance there, Stanford researchers have managed to create SNAG, the Stereotyped Nature-Inspired Aerial Grasper, which can fly like a quadcopter but land like a peregrine falcon. SNAG is not your average drone but a robotic bird that can grasp branches of various forms and textures with its 3D-printed legs, motors for muscles, and fishing line for tendons. The end goal is to conserve battery while filming or surveying an area by perching instead of hovering all the time.
https://www.notebookcheck.net/First-SNAG-drone-that-can-perch-on-trees-like-a-bird-has-3D-printed-falcon-legs.583137.0.html