Flaps are metal, slat-like things that lower on a 90o Angle that are used to slow a plane down on approach to a runways, but a raised in flight.
What is a "flapping sound" Birds?
got youtube.com and type in "Orgami flapping bird" and the select the first video you see
It is flapping wings.
by flapping its wings
By flapping them?
Dangling participles make for very odd, awkward, and often humorous sentences.Wrong: Flapping its wings wildly, the dog was fascinated by the bat stuck in the fire place.A dog has no wings to flap, but in this sentence " Flapping its wings wildly" is meant to refer the dog.You need to get " Flapping its wings wildly," to refer to the bat.Correct: The dog was fascinated by the bat that was stuck in the fire place and flapping its wings wildly.Correct: The dog was fascinated by the bat stuck in the fire place, flapping its wings wildly.
Piezoelectric materials can produce electrical output from a flapping motion. Piezoelectric devices convert mechanical energy into electrical energy when they are deformed or subjected to stress, making them suitable for capturing energy from vibrations, flapping, or bending movements.
An albatross can glide over a thousand miles without flapping its wings.
by flapping their wings
Flapping wings and quacks
by flapping their wings
By flapping them?