Engineers believe a robot bird flying without a tailfin could revolutionise aviation. University of Groningen professor of Biomimetics David Lentink developed the robotic pigeon named PigeonBot II ...

With legs and wings, the RAVEN can take off with no runway, and even hop along the ground. When you purchase through links on our site, we may earn an affiliate commission. Here’s how it works.

Most drones on the market are rotary-wing quadcopters, which can conveniently land and take off almost anywhere. The problem is they are less energy-efficient than fixed-wing aircraft, which can fly ...