There were also noises from whining power inverters and whirring ringing generators. Whirring, cranking gears are heard as they leave the ground. The bird's wing beat is minimal and produces an audible whirring sound. Their flight is direct with a loud whirring of wings. Caique wing feathers produce a distinctive whirring sound in flight. The door knocks, and she suddenly jumps up, and the whirring stops. Police became suspicious when they heard whirring sounds inside the bags. The wings make a whirring sound when the bird is disturbed from a resting place. The call of nestlings is described as a soft but constant whirring sound. Its wings also produce a whirring sound that is used during display flights. Then we sat in silence, watching the scenery whirring past us in the improving light. Their short wings give them a distinctive whirring flight. The flight is direct, with fast whirring wing beats due to the short wings. The flight is distinctive; it consists of whirring wing-beats with occasional sudden changes of direction. The flight of the white-throated kingfisher is rapid and direct, the short rounded wings whirring.