Autonomous P-Flap ornithopter uses a claw to perch like a bird
https://newatlas.com/drones/p-flap-ornithopter-claw-perch/
A close look at P-Flap's claw mechanismRaphael Zufferey
Paper: How ornithopters can perch autonomously on a branch
https://www.nature.com/articles/s41467-022-35356-5
A Rendered view of the leg-claw system with the flapping-wing robot. The five degrees of freedom are displayed as well as the features necessary for perching flights. B The steps of the proposed perching method for ornithopters. C Perching sequence. D Eagle shortly before landing on a branch by D. Freeman, CC BY-SA 2.0.