the sound of flying birds

[alpacinou]

How can I describe the sound that a flock of flying birds produce?

Jane looked out the window. The street was quiet. A flock of pigeons suddenly flew by, their ....... intruding on the stillness of the morning.


I'm looking for a word to fill the blank with.

 

[teechar]

Jane looked out the window. The street was quiet. A flock of pigeons suddenly flew by, the noise/clamour/din from their flapping wings intruding on the stillness of the morning.

Try that.