It is believed that modern birds descended from several species of dinosaurs, and a transitional species between them
The researchers decided to test this hypothesis - theycreated a robot, the shape and movements of which repeat the shape of Caudipterix - a larger peacock-sized animal, which is the earliest known flightless dinosaur with wings.
The movement of flapping wings developed passively andnaturally, when the dinosaur ran on the ground. Although this movement could not lift the dinosaur into the air, we saw that wing flapping may have evolved before gliding.
Jing-Shan Zhao, lead author of the study
Previously, engineers from Humboldt University andPolytechnic school of Lausanne using computer simulation and four-legged robot recreated the gait of one of the first reptiles on Earth - Orobates pabsti. She lived on our planet almost 260 million years ago.