Aircraft flights
Despite the fact that during the flight, unlike birds, the wings of an aircraft are rigidly fixed to the body, the aircraft flies precisely thanks to them, as well as the engines that create thrust and accelerate the aircraft to the required speed.
The cross section of an airplane wing is very similar to that of a bird's wing. And this is not accidental, since when designing an airplane, people, first of all, were guided by the flight of birds.